- published: 29 Jun 2015
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We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo.
The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question.
We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumption causes.
There could be agendas to push for cleaner energy sources, or driving politicians towards climate change denial to maintain nefarious financial gain.
We also might need a new lilypad to jump to, assuming we can sort out the travel obstacles. The thing that interests me personally the most is, when can I see an alien?
The habitable zone, also known as the “Goldilocks Zone”, is the region around a star where the average temperature on a planet allows for liquid water with which to make porridge. It’s that liquid water that we hunt for not only for our future uses, but as an indicator of where alien life could be in the Universe.
Problems outside this range are pretty obvious. Too hot, it’s a perpetual steam bath, or it produces separate piles of hydrogen and oxygen. Then your oxygen combines with carbon to form carbon dioxide, and then hydrogen just buggers off into space.
This is what happened with Venus. If the planet’s too cold, then bodies of water are solid skating rinks. There could be pockets of liquid water deep beneath the icy surface, but overall, they’re bad places to live.
We’ve got this on Mars and the moons of Jupiter and Saturn. The habitable zone is a rough measurement. It’s a place where liquid water might exist.
Unfortunately, it’s not just a simple equation of the distance to the star versus the amount of energy output. The atmosphere of the planet matters a lot. In fact, both Venus and Mars are considered to be within the Solar System’s habitable zone.
Venusian atmosphere is so thick with carbon dioxide that it traps energy from the Sun and creates an inhospitable oven of heat that would quickboil any life faster than you can say “pass the garlic butter”.
It’s the opposite on Mars. The thin atmosphere won’t trap any heat at all, so the planet is bun-chillingly cold. Upgrade the atmospheres of either planet and you could get worlds which would be perfectly reasonable to live on. Maybe if we could bash them together and we could spill the atmosphere of one onto the other? Tell Blackbolt to ring up Franklin Richards, I have an idea!
When we look at other worlds in the Milky Way and wonder if they have life, it’s not enough to just check to see if they’re in the habitable zone. We need to know what shape their atmosphere is in.
Astronomers have actually discovered planets located in the habitable zones around other stars, but from what we can tell, they’re probably not places you’d want to live. They’re all orbiting red dwarf stars.
It doesn’t sound too bad to live in a red tinted landscape, provided it came with an Angelo Badalamenti soundtrack, red dwarf stars are extremely violent in their youth. They blast out enormous solar flares and coronal mass ejections. These would scour the surface of any planets caught orbiting them close enough for liquid water to be present.
There is some hope. After a few hundred million years of high activity, these red dwarf stars settle down and sip away at their fuel reserves of hydrogen for potentially trillions of years. If life can hold on long enough to get through the early stages, it might have a long existence ahead of it.
When you’re thinking about a new home among the stars, or trying to seek out new life in the Universe, look for planets in the habitable zone.
As we’ve seen, it’s only a rough guideline. You probably want to check out the place first and make sure it’s truly liveable before you commit to a timeshare condo around Gliese 581.
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
- published: 24 Jul 2015
- views: 110580
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Galactic Habitable Zone Article:
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- published: 28 Apr 2014
- views: 41643
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it.
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Music: Left Spine Down - “X-Ray”
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I’ve got to say, you are one of the luckiest people I’ve ever met.
For starters, you are the descendant of an incomprehensible number of lifeforms who were successful, and survived long enough to find a partner, procreate, and have an offspring. Billions of years, and you are the result of an unbroken chain of success, surviving through global catastrophe after catastrophe.
Nice going.
Not only that, but your lineage happened to be born on a planet, which was in just the right location around just the right kind of star. Not too hot, not too cold, just the right temperature where liquid water, and whatever else was necessary for life to get going.
Again, I like your lucky streak.
In fact, you happened to be born into a Universe that has the right physical constants, like the force of gravity or the binding force of atoms, so that stars, planets and even the chemistry of life could happen at all.
But there’s another lottery you won, and you probably didn’t even know about it. You happened to be born on an unassuming, mostly harmless planet orbiting a G-type main sequence star in the habitable zone of the Milky Way.
Wait a second, even galaxies have habitable zones? Yep, and you’re in it right now.
The Milky Way is a big place, measuring up to 180,000 light years across. It contains 100 to 400 billion stars spread across this enormous volume.
We’re located about 27,000 light years away from the center of the Milky Way, and tens of thousands of light-years away from the outer rim.
The Milky Way has some really uninhabitable zones. Down near the center of the galaxy, the density of stars is much greater. And these stars are blasting out a combined radiation that would make it much more unlikely for life to evolve.
Radiation is bad for life. But it gets worse. There’s a huge cloud of comets around the Sun known as the Oort Cloud. Some of the greatest catastrophes in history happened when these comets were kicked into a collision course with the Earth by a passing star. Closer to the galactic core, these disruptions would happen much more often.
There’s another dangerous place you don’t want to be: the galaxy’s spiral arms. These are regions of increased density in the galaxy, where star formation is much more common. And newly forming stars blast out dangerous radiation.
Fortunately, we’re far away from the spiral arms, and we orbit the center of the Milky Way in a nice circular orbit, which means we don’t cross these spiral arms very often.
We stay nice and far away from the dangerous parts of the Milky Way, however, we’re still close enough to the action that our Solar System gathered the elements we needed for life.
The first stars in the Universe only had hydrogen, helium and a few other trace elements left over from the Big Bang. But when the largest stars detonated as supernovae, they seeded the surrounding regions with heavier elements like oxygen, carbon, even iron and gold.
Our solar nebula was seeded with the heavy elements from many generations of stars, giving us all the raw materials to help set evolution in motion.
If the Solar System was further out, we probably wouldn’t have gotten enough of those heavier elements. So, thanks multiple generations of dead stars.
According to astrobiologists the galactic habitable zone probably starts just outside the galactic bulge - about 13,000 light-years from the center, and ends about halfway out in the disk, 33,000 light-years from the center.
Remember, we’re 27,000 light-years from the center, so just inside that outer edge. Phew.
Of course, not all astronomers believe in this Rare Earth hypothesis. In fact, just as we’re finding life on Earth wherever we find water, they believe that life is more robust and resilient. It could still survive and even thrive with more radiation, and less heavier elements.
Furthermore, we’re learning that solar systems might be able to migrate a significant distance from where they formed. Stars that started closer in where there were plenty of heavier elements might have drifted outward to the safer, calmer galactic suburbs, giving life a better chance at getting a foothold.
As always, we’ll need more data, more research to get an answer to this question.
- published: 19 Sep 2016
- views: 12845
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
- published: 12 May 2014
- views: 1653
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone.
“This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question ‘are we alone’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.”
At about 40 light-years (235 trillion miles) from Earth, the system of planets is relatively close to us, in the constellation Aquarius. Because they are located outside of our solar system, these planets are scientifically known as exoplanets.
This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile. In May 2016, researchers using TRAPPIST announced they had discovered three planets in the system. Assisted by several ground-based telescopes, including the European Southern Observatory's Very Large Telescope, Spitzer confirmed the existence of two of these planets and discovered five additional ones, increasing the number of known planets in the system to seven.
The new results were published Wednesday in the journal Nature, and announced at a news briefing at NASA Headquarters in Washington.
Using Spitzer data, the team precisely measured the sizes of the seven planets and developed first estimates of the masses of six of them, allowing their density to be estimated.
Based on their densities, all of the TRAPPIST-1 planets are likely to be rocky. Further observations will not only help determine whether they are rich in water, but also possibly reveal whether any could have liquid water on their surfaces. The mass of the seventh and farthest exoplanet has not yet been estimated – scientists believe it could be an icy, "snowball-like" world, but further observations are needed.
"The seven wonders of TRAPPIST-1 are the first Earth-size planets that have been found orbiting this kind of star," said Michael Gillon, lead author of the paper and the principal investigator of the TRAPPIST exoplanet survey at the University of Liege, Belgium. "It is also the best target yet for studying the atmospheres of potentially habitable, Earth-size worlds."
Spitzer, Hubble, and Kepler will help astronomers plan for follow-up studies using NASA's upcoming James Webb Space Telescope, launching in 2018. With much greater sensitivity, Webb will be able to detect the chemical fingerprints of water, methane, oxygen, ozone, and other components of a planet's atmosphere. Webb also will analyze planets' temperatures and surface pressures – key factors in assessing their habitability.
NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate. Science operations are conducted at the Spitzer Science Center, at Caltech, in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.
Source: https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around
CREDITS: National Aeronautics and Space Administration - www.nasa.gov
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- published: 26 Feb 2017
- views: 28
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change.
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- published: 03 Feb 2017
- views: 2857
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
- published: 13 Jun 2016
- views: 1512
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary of Friendship 7 Flight!
- published: 24 Feb 2017
- views: 4044
Circumstellar habitable zone
In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the region around a star within which planetary-mass objects with sufficient atmospheric pressure can support liquid water at their surfaces. The bounds of the CHZ are calculated using the known requirements of Earth's biosphere, its position in the Solar System and the amount of radiant energy it receives from the Sun. Due to the importance of liquid water to life as it exists on Earth, the nature of the CHZ and the objects within is believed to be instrumental in determining the scope and distribution of Earth-like extraterrestrial life and intelligence.
The habitable zone is also called the Goldilocks zone, a metaphor of the children's fairy tale of Goldilocks and the Three Bears, in which a little girl chooses from sets of three items, ignoring the ones that are too extreme (large or small, hot or cold, etc.), and settling on the one in the middle, which is "just right".
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This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Milky Way
The Milky Way is the galaxy that contains our Solar System. Its name "milky" is derived from its appearance as a dim glowing band arching across the night sky whose individual stars cannot be distinguished by the naked eye. The term "Milky Way" is a translation of the Latin via lactea, from the Greek γαλαξίας κύκλος (galaxías kýklos, "milky circle"). From Earth, the Milky Way appears as a band because its disk-shaped structure is viewed from within. Galileo Galilei first resolved the band of light into individual stars with his telescope in 1610. Until the early 1920s, most astronomers thought that the Milky Way contained all the stars in the Universe. Following the 1920 Great Debate between the astronomers Harlow Shapley and Heber Curtis, observations by Edwin Hubble showed that the Milky Way is just one of many galaxies—now estimated to number as many as 200 billion galaxies in the observable universe.
The Milky Way is a barred spiral galaxy that has a diameter usually considered to be about 100,000–120,000 light-years but may be 150,000–180,000 light-years. The Milky Way is estimated to contain 100–400 billion stars, although this number may be as high as one trillion. There are probably at least 100 billion planets in the Milky Way. The Solar System is located within the disk, about 27,000 light-years from the Galactic Center, on the inner edge of one of the spiral-shaped concentrations of gas and dust called the Orion Arm. The stars in the inner ≈10,000 light-years form a bulge and one or more bars that radiate from the bulge. The very center is marked by an intense radio source, named Sagittarius A*, which is likely to be a supermassive black hole.
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This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Solar System
The Solar System is the gravitationally bound system comprising the Sun and the objects that orbit it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets, with the remainder being significantly smaller objects, such as dwarf planets and small Solar System bodies. Of the objects that orbit the Sun indirectly, the moons, two are larger than the smallest planet, Mercury.
The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed mostly of substances with relatively high melting points compared with hydrogen and helium, called ices, such as water, ammonia and methane. All planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.
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Zone
Zone or The Zone or In the Zone may refer to:
Geography
Place names
Zones
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This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
Space observatory
A space observatory is any instrument (such as a telescope) in outer space that is used for observation of distant planets, galaxies and other outer space objects. The first such space observatory was the Hubble Space Telescope launched in 1990. Space observatories avoid many of the problems of ground observatories, such as light pollution and the filtering and distortion of electromagnetic radiation (scintillation).
This category is distinct from other observatories located in space that are pointed toward Earth for the purpose of reconnaissance and other types of information gathering.
History
In 1946, American theoretical astrophysicist Lyman Spitzer was the first to conceive the idea of a telescope in outer space, a decade before the Soviet Union launched the first satellite, Sputnik 1.
Spitzer's proposal called for a large telescope that would not be hindered by Earth's atmosphere. After lobbying in the 1960s and 70s for such a system to be built, Spitzer's vision ultimately materialized into the Hubble Space Telescope, which was launched on April 24, 1990 by the Space Shuttle Discovery (STS-31).
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5:09What Is The Habitable Zone?
What Is The Habitable Zone?What Is The Habitable Zone?
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's. The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo. The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question. We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumption causes. There could be agendas to push for cleaner energy sources, or driving politicians towards climate change denial to maintain nefarious financial gain. We also might need a new lilypad to jump to, assuming we can sort out the travel obstacles. The thing that interests me personally the most is, when can I see an alien? The habitable zone, also known as the “Goldilocks Zone”, is the region around a star where the average temperature on a planet allows for liquid water with which to make porridge. It’s that liquid water that we hunt for not only for our future uses, but as an indicator of where alien life could be in the Universe. Problems outside this range are pretty obvious. Too hot, it’s a perpetual steam bath, or it produces separate piles of hydrogen and oxygen. Then your oxygen combines with carbon to form carbon dioxide, and then hydrogen just buggers off into space. This is what happened with Venus. If the planet’s too cold, then bodies of water are solid skating rinks. There could be pockets of liquid water deep beneath the icy surface, but overall, they’re bad places to live. We’ve got this on Mars and the moons of Jupiter and Saturn. The habitable zone is a rough measurement. It’s a place where liquid water might exist. Unfortunately, it’s not just a simple equation of the distance to the star versus the amount of energy output. The atmosphere of the planet matters a lot. In fact, both Venus and Mars are considered to be within the Solar System’s habitable zone. Venusian atmosphere is so thick with carbon dioxide that it traps energy from the Sun and creates an inhospitable oven of heat that would quickboil any life faster than you can say “pass the garlic butter”. It’s the opposite on Mars. The thin atmosphere won’t trap any heat at all, so the planet is bun-chillingly cold. Upgrade the atmospheres of either planet and you could get worlds which would be perfectly reasonable to live on. Maybe if we could bash them together and we could spill the atmosphere of one onto the other? Tell Blackbolt to ring up Franklin Richards, I have an idea! When we look at other worlds in the Milky Way and wonder if they have life, it’s not enough to just check to see if they’re in the habitable zone. We need to know what shape their atmosphere is in. Astronomers have actually discovered planets located in the habitable zones around other stars, but from what we can tell, they’re probably not places you’d want to live. They’re all orbiting red dwarf stars. It doesn’t sound too bad to live in a red tinted landscape, provided it came with an Angelo Badalamenti soundtrack, red dwarf stars are extremely violent in their youth. They blast out enormous solar flares and coronal mass ejections. These would scour the surface of any planets caught orbiting them close enough for liquid water to be present. There is some hope. After a few hundred million years of high activity, these red dwarf stars settle down and sip away at their fuel reserves of hydrogen for potentially trillions of years. If life can hold on long enough to get through the early stages, it might have a long existence ahead of it. When you’re thinking about a new home among the stars, or trying to seek out new life in the Universe, look for planets in the habitable zone. As we’ve seen, it’s only a rough guideline. You probably want to check out the place first and make sure it’s truly liveable before you commit to a timeshare condo around Gliese 581. -
3:06NASA discovers Earth-like planet in 'habitable zone...
NASA discovers Earth-like planet in 'habitable zone...NASA discovers Earth-like planet in 'habitable zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone." -
3:06Galactic Habitable Zone - 7 considerations
Galactic Habitable Zone - 7 considerationsGalactic Habitable Zone - 7 considerations
...ever wanted to build your own galaxy? Here's how!! Facebook: http://goo.gl/h5Pobh Twitter: https://twitter.com/Artifexian Galactic Habitable Zone Article: http://en.wikipedia.org/wiki/Galactic_habitable_zone -
6:01Does Our Galaxy Have a Habitable Zone?
Does Our Galaxy Have a Habitable Zone?Does Our Galaxy Have a Habitable Zone?
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it. Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Follow us on Tumblr: http://universetoday.tumblr.com/ Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain Jason Harmer - @jasoncharmer Chad Weber - weber.chad@gmail.com Created by: Fraser Cain and Jason Harmer Edited by: Chad Weber Music: Left Spine Down - “X-Ray” https://www.youtube.com/watch?v=4tcoZNrSveE I’ve got to say, you are one of the luckiest people I’ve ever met. For starters, you are the descendant of an incomprehensible number of lifeforms who were successful, and survived long enough to find a partner, procreate, and have an offspring. Billions of years, and you are the result of an unbroken chain of success, surviving through global catastrophe after catastrophe. Nice going. Not only that, but your lineage happened to be born on a planet, which was in just the right location around just the right kind of star. Not too hot, not too cold, just the right temperature where liquid water, and whatever else was necessary for life to get going. Again, I like your lucky streak. In fact, you happened to be born into a Universe that has the right physical constants, like the force of gravity or the binding force of atoms, so that stars, planets and even the chemistry of life could happen at all. But there’s another lottery you won, and you probably didn’t even know about it. You happened to be born on an unassuming, mostly harmless planet orbiting a G-type main sequence star in the habitable zone of the Milky Way. Wait a second, even galaxies have habitable zones? Yep, and you’re in it right now. The Milky Way is a big place, measuring up to 180,000 light years across. It contains 100 to 400 billion stars spread across this enormous volume. We’re located about 27,000 light years away from the center of the Milky Way, and tens of thousands of light-years away from the outer rim. The Milky Way has some really uninhabitable zones. Down near the center of the galaxy, the density of stars is much greater. And these stars are blasting out a combined radiation that would make it much more unlikely for life to evolve. Radiation is bad for life. But it gets worse. There’s a huge cloud of comets around the Sun known as the Oort Cloud. Some of the greatest catastrophes in history happened when these comets were kicked into a collision course with the Earth by a passing star. Closer to the galactic core, these disruptions would happen much more often. There’s another dangerous place you don’t want to be: the galaxy’s spiral arms. These are regions of increased density in the galaxy, where star formation is much more common. And newly forming stars blast out dangerous radiation. Fortunately, we’re far away from the spiral arms, and we orbit the center of the Milky Way in a nice circular orbit, which means we don’t cross these spiral arms very often. We stay nice and far away from the dangerous parts of the Milky Way, however, we’re still close enough to the action that our Solar System gathered the elements we needed for life. The first stars in the Universe only had hydrogen, helium and a few other trace elements left over from the Big Bang. But when the largest stars detonated as supernovae, they seeded the surrounding regions with heavier elements like oxygen, carbon, even iron and gold. Our solar nebula was seeded with the heavy elements from many generations of stars, giving us all the raw materials to help set evolution in motion. If the Solar System was further out, we probably wouldn’t have gotten enough of those heavier elements. So, thanks multiple generations of dead stars. According to astrobiologists the galactic habitable zone probably starts just outside the galactic bulge - about 13,000 light-years from the center, and ends about halfway out in the disk, 33,000 light-years from the center. Remember, we’re 27,000 light-years from the center, so just inside that outer edge. Phew. Of course, not all astronomers believe in this Rare Earth hypothesis. In fact, just as we’re finding life on Earth wherever we find water, they believe that life is more robust and resilient. It could still survive and even thrive with more radiation, and less heavier elements. Furthermore, we’re learning that solar systems might be able to migrate a significant distance from where they formed. Stars that started closer in where there were plenty of heavier elements might have drifted outward to the safer, calmer galactic suburbs, giving life a better chance at getting a foothold. As always, we’ll need more data, more research to get an answer to this question. -
3:24What is the Habitable Zone?
What is the Habitable Zone?What is the Habitable Zone?
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor. -
38:26NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single StarNASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone. “This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question ‘are we alone’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.” At about 40 light-years (235 trillion miles) from Earth, the system of planets is relatively close to us, in the constellation Aquarius. Because they are located outside of our solar system, these planets are scientifically known as exoplanets. This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile. In May 2016, researchers using TRAPPIST announced they had discovered three planets in the system. Assisted by several ground-based telescopes, including the European Southern Observatory's Very Large Telescope, Spitzer confirmed the existence of two of these planets and discovered five additional ones, increasing the number of known planets in the system to seven. The new results were published Wednesday in the journal Nature, and announced at a news briefing at NASA Headquarters in Washington. Using Spitzer data, the team precisely measured the sizes of the seven planets and developed first estimates of the masses of six of them, allowing their density to be estimated. Based on their densities, all of the TRAPPIST-1 planets are likely to be rocky. Further observations will not only help determine whether they are rich in water, but also possibly reveal whether any could have liquid water on their surfaces. The mass of the seventh and farthest exoplanet has not yet been estimated – scientists believe it could be an icy, "snowball-like" world, but further observations are needed. "The seven wonders of TRAPPIST-1 are the first Earth-size planets that have been found orbiting this kind of star," said Michael Gillon, lead author of the paper and the principal investigator of the TRAPPIST exoplanet survey at the University of Liege, Belgium. "It is also the best target yet for studying the atmospheres of potentially habitable, Earth-size worlds." Spitzer, Hubble, and Kepler will help astronomers plan for follow-up studies using NASA's upcoming James Webb Space Telescope, launching in 2018. With much greater sensitivity, Webb will be able to detect the chemical fingerprints of water, methane, oxygen, ozone, and other components of a planet's atmosphere. Webb also will analyze planets' temperatures and surface pressures – key factors in assessing their habitability. NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate. Science operations are conducted at the Spitzer Science Center, at Caltech, in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA. Source: https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around CREDITS: National Aeronautics and Space Administration - www.nasa.gov Like:) Subscribe:) Share:) and Enjoy:) -
10:59Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Hello and welcome to What Da Math! In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change. Patreon page: https://www.patreon.com/user?u=2318196&ty;=h Enjoy and please subscribe. Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x Twitter: https://twitter.com/WhatDaMath Facebook: https://www.facebook.com/whatdamath Twitch: http://www.twitch.tv/whatdamath -
1:22:44Finding a New Earth: Exoplanets and the Habitable Zone
Finding a New Earth: Exoplanets and the Habitable ZoneFinding a New Earth: Exoplanets and the Habitable Zone
Dr. Stephen Kane (San Francisco State University) Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.) -
1:53Moving Mars to the Habitable Zone
Moving Mars to the Habitable ZoneMoving Mars to the Habitable Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126 -
3:28The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary of Friendship 7 Flight!
-
What Is The Habitable Zone?
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's. The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo. The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question. We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumpt...
published: 29 Jun 2015 -
NASA discovers Earth-like planet in 'habitable zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
published: 24 Jul 2015 -
Galactic Habitable Zone - 7 considerations
...ever wanted to build your own galaxy? Here's how!! Facebook: http://goo.gl/h5Pobh Twitter: https://twitter.com/Artifexian Galactic Habitable Zone Article: http://en.wikipedia.org/wiki/Galactic_habitable_zone
published: 28 Apr 2014 -
Does Our Galaxy Have a Habitable Zone?
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it. Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Follow us on Tumblr: http://universetoday.tumblr.com/ Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain Jason Harmer - @jasoncharmer Chad Weber - weber.chad@gmail.com Created by: Fraser Cain and Jason Harmer Edited by: Chad Weber Music: Left Spine Down - “X-Ray” https://www.youtube.com/watch?v=4tcoZNrSveE I’ve got to say, you are one of the luckiest people I’v...
published: 19 Sep 2016 -
What is the Habitable Zone?
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
published: 12 May 2014 -
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone. “This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission...
published: 26 Feb 2017 -
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Hello and welcome to What Da Math! In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change. Patreon page: https://www.patreon.com/user?u=2318196&ty;=h Enjoy and please subscribe. Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x Twitter: https://twitter.com/WhatDaMath Facebook: https://www.facebook.com/whatdamath Twitch: http://www.twitch.tv/whatdamath
published: 03 Feb 2017 -
Finding a New Earth: Exoplanets and the Habitable Zone
Dr. Stephen Kane (San Francisco State University) Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
published: 13 Jun 2016 -
Moving Mars to the Habitable Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
published: 24 Apr 2017 -
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary ...
published: 24 Feb 2017
What Is The Habitable Zone?
- Order: Reorder
- Duration: 5:09
- Updated: 29 Jun 2015
- views: 14267
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in y...
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo.
The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question.
We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumption causes.
There could be agendas to push for cleaner energy sources, or driving politicians towards climate change denial to maintain nefarious financial gain.
We also might need a new lilypad to jump to, assuming we can sort out the travel obstacles. The thing that interests me personally the most is, when can I see an alien?
The habitable zone, also known as the “Goldilocks Zone”, is the region around a star where the average temperature on a planet allows for liquid water with which to make porridge. It’s that liquid water that we hunt for not only for our future uses, but as an indicator of where alien life could be in the Universe.
Problems outside this range are pretty obvious. Too hot, it’s a perpetual steam bath, or it produces separate piles of hydrogen and oxygen. Then your oxygen combines with carbon to form carbon dioxide, and then hydrogen just buggers off into space.
This is what happened with Venus. If the planet’s too cold, then bodies of water are solid skating rinks. There could be pockets of liquid water deep beneath the icy surface, but overall, they’re bad places to live.
We’ve got this on Mars and the moons of Jupiter and Saturn. The habitable zone is a rough measurement. It’s a place where liquid water might exist.
Unfortunately, it’s not just a simple equation of the distance to the star versus the amount of energy output. The atmosphere of the planet matters a lot. In fact, both Venus and Mars are considered to be within the Solar System’s habitable zone.
Venusian atmosphere is so thick with carbon dioxide that it traps energy from the Sun and creates an inhospitable oven of heat that would quickboil any life faster than you can say “pass the garlic butter”.
It’s the opposite on Mars. The thin atmosphere won’t trap any heat at all, so the planet is bun-chillingly cold. Upgrade the atmospheres of either planet and you could get worlds which would be perfectly reasonable to live on. Maybe if we could bash them together and we could spill the atmosphere of one onto the other? Tell Blackbolt to ring up Franklin Richards, I have an idea!
When we look at other worlds in the Milky Way and wonder if they have life, it’s not enough to just check to see if they’re in the habitable zone. We need to know what shape their atmosphere is in.
Astronomers have actually discovered planets located in the habitable zones around other stars, but from what we can tell, they’re probably not places you’d want to live. They’re all orbiting red dwarf stars.
It doesn’t sound too bad to live in a red tinted landscape, provided it came with an Angelo Badalamenti soundtrack, red dwarf stars are extremely violent in their youth. They blast out enormous solar flares and coronal mass ejections. These would scour the surface of any planets caught orbiting them close enough for liquid water to be present.
There is some hope. After a few hundred million years of high activity, these red dwarf stars settle down and sip away at their fuel reserves of hydrogen for potentially trillions of years. If life can hold on long enough to get through the early stages, it might have a long existence ahead of it.
When you’re thinking about a new home among the stars, or trying to seek out new life in the Universe, look for planets in the habitable zone.
As we’ve seen, it’s only a rough guideline. You probably want to check out the place first and make sure it’s truly liveable before you commit to a timeshare condo around Gliese 581.
https://wn.com/What_Is_The_Habitable_Zone
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo.
The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question.
We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumption causes.
There could be agendas to push for cleaner energy sources, or driving politicians towards climate change denial to maintain nefarious financial gain.
We also might need a new lilypad to jump to, assuming we can sort out the travel obstacles. The thing that interests me personally the most is, when can I see an alien?
The habitable zone, also known as the “Goldilocks Zone”, is the region around a star where the average temperature on a planet allows for liquid water with which to make porridge. It’s that liquid water that we hunt for not only for our future uses, but as an indicator of where alien life could be in the Universe.
Problems outside this range are pretty obvious. Too hot, it’s a perpetual steam bath, or it produces separate piles of hydrogen and oxygen. Then your oxygen combines with carbon to form carbon dioxide, and then hydrogen just buggers off into space.
This is what happened with Venus. If the planet’s too cold, then bodies of water are solid skating rinks. There could be pockets of liquid water deep beneath the icy surface, but overall, they’re bad places to live.
We’ve got this on Mars and the moons of Jupiter and Saturn. The habitable zone is a rough measurement. It’s a place where liquid water might exist.
Unfortunately, it’s not just a simple equation of the distance to the star versus the amount of energy output. The atmosphere of the planet matters a lot. In fact, both Venus and Mars are considered to be within the Solar System’s habitable zone.
Venusian atmosphere is so thick with carbon dioxide that it traps energy from the Sun and creates an inhospitable oven of heat that would quickboil any life faster than you can say “pass the garlic butter”.
It’s the opposite on Mars. The thin atmosphere won’t trap any heat at all, so the planet is bun-chillingly cold. Upgrade the atmospheres of either planet and you could get worlds which would be perfectly reasonable to live on. Maybe if we could bash them together and we could spill the atmosphere of one onto the other? Tell Blackbolt to ring up Franklin Richards, I have an idea!
When we look at other worlds in the Milky Way and wonder if they have life, it’s not enough to just check to see if they’re in the habitable zone. We need to know what shape their atmosphere is in.
Astronomers have actually discovered planets located in the habitable zones around other stars, but from what we can tell, they’re probably not places you’d want to live. They’re all orbiting red dwarf stars.
It doesn’t sound too bad to live in a red tinted landscape, provided it came with an Angelo Badalamenti soundtrack, red dwarf stars are extremely violent in their youth. They blast out enormous solar flares and coronal mass ejections. These would scour the surface of any planets caught orbiting them close enough for liquid water to be present.
There is some hope. After a few hundred million years of high activity, these red dwarf stars settle down and sip away at their fuel reserves of hydrogen for potentially trillions of years. If life can hold on long enough to get through the early stages, it might have a long existence ahead of it.
When you’re thinking about a new home among the stars, or trying to seek out new life in the Universe, look for planets in the habitable zone.
As we’ve seen, it’s only a rough guideline. You probably want to check out the place first and make sure it’s truly liveable before you commit to a timeshare condo around Gliese 581.
- published: 29 Jun 2015
- views: 14267
NASA discovers Earth-like planet in 'habitable zone...
- Order: Reorder
- Duration: 3:06
- Updated: 24 Jul 2015
- views: 110580
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
https://wn.com/Nasa_Discovers_Earth_Like_Planet_In_'Habitable_Zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
- published: 24 Jul 2015
- views: 110580
Galactic Habitable Zone - 7 considerations
- Order: Reorder
- Duration: 3:06
- Updated: 28 Apr 2014
- views: 41643
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twitter:
https://twitter.com/Artifexian
Galactic Habitable Zone Article:...
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twitter:
https://twitter.com/Artifexian
Galactic Habitable Zone Article:
http://en.wikipedia.org/wiki/Galactic_habitable_zone
https://wn.com/Galactic_Habitable_Zone_7_Considerations
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twitter:
https://twitter.com/Artifexian
Galactic Habitable Zone Article:
http://en.wikipedia.org/wiki/Galactic_habitable_zone
- published: 28 Apr 2014
- views: 41643
Does Our Galaxy Have a Habitable Zone?
- Order: Reorder
- Duration: 6:01
- Updated: 19 Sep 2016
- views: 12845
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know ...
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it.
Support us at: http://www.patreon.com/universetoday
More stories at: http://www.universetoday.com/
Follow us on Twitter: @universetoday
Follow us on Tumblr: http://universetoday.tumblr.com/
Like us on Facebook: https://www.facebook.com/universetoday
Google+ - https://plus.google.com/+universetoday/
Instagram - http://instagram.com/universetoday
Team: Fraser Cain - @fcain
Jason Harmer - @jasoncharmer
Chad Weber - weber.chad@gmail.com
Created by: Fraser Cain and Jason Harmer
Edited by: Chad Weber
Music: Left Spine Down - “X-Ray”
https://www.youtube.com/watch?v=4tcoZNrSveE
I’ve got to say, you are one of the luckiest people I’ve ever met.
For starters, you are the descendant of an incomprehensible number of lifeforms who were successful, and survived long enough to find a partner, procreate, and have an offspring. Billions of years, and you are the result of an unbroken chain of success, surviving through global catastrophe after catastrophe.
Nice going.
Not only that, but your lineage happened to be born on a planet, which was in just the right location around just the right kind of star. Not too hot, not too cold, just the right temperature where liquid water, and whatever else was necessary for life to get going.
Again, I like your lucky streak.
In fact, you happened to be born into a Universe that has the right physical constants, like the force of gravity or the binding force of atoms, so that stars, planets and even the chemistry of life could happen at all.
But there’s another lottery you won, and you probably didn’t even know about it. You happened to be born on an unassuming, mostly harmless planet orbiting a G-type main sequence star in the habitable zone of the Milky Way.
Wait a second, even galaxies have habitable zones? Yep, and you’re in it right now.
The Milky Way is a big place, measuring up to 180,000 light years across. It contains 100 to 400 billion stars spread across this enormous volume.
We’re located about 27,000 light years away from the center of the Milky Way, and tens of thousands of light-years away from the outer rim.
The Milky Way has some really uninhabitable zones. Down near the center of the galaxy, the density of stars is much greater. And these stars are blasting out a combined radiation that would make it much more unlikely for life to evolve.
Radiation is bad for life. But it gets worse. There’s a huge cloud of comets around the Sun known as the Oort Cloud. Some of the greatest catastrophes in history happened when these comets were kicked into a collision course with the Earth by a passing star. Closer to the galactic core, these disruptions would happen much more often.
There’s another dangerous place you don’t want to be: the galaxy’s spiral arms. These are regions of increased density in the galaxy, where star formation is much more common. And newly forming stars blast out dangerous radiation.
Fortunately, we’re far away from the spiral arms, and we orbit the center of the Milky Way in a nice circular orbit, which means we don’t cross these spiral arms very often.
We stay nice and far away from the dangerous parts of the Milky Way, however, we’re still close enough to the action that our Solar System gathered the elements we needed for life.
The first stars in the Universe only had hydrogen, helium and a few other trace elements left over from the Big Bang. But when the largest stars detonated as supernovae, they seeded the surrounding regions with heavier elements like oxygen, carbon, even iron and gold.
Our solar nebula was seeded with the heavy elements from many generations of stars, giving us all the raw materials to help set evolution in motion.
If the Solar System was further out, we probably wouldn’t have gotten enough of those heavier elements. So, thanks multiple generations of dead stars.
According to astrobiologists the galactic habitable zone probably starts just outside the galactic bulge - about 13,000 light-years from the center, and ends about halfway out in the disk, 33,000 light-years from the center.
Remember, we’re 27,000 light-years from the center, so just inside that outer edge. Phew.
Of course, not all astronomers believe in this Rare Earth hypothesis. In fact, just as we’re finding life on Earth wherever we find water, they believe that life is more robust and resilient. It could still survive and even thrive with more radiation, and less heavier elements.
Furthermore, we’re learning that solar systems might be able to migrate a significant distance from where they formed. Stars that started closer in where there were plenty of heavier elements might have drifted outward to the safer, calmer galactic suburbs, giving life a better chance at getting a foothold.
As always, we’ll need more data, more research to get an answer to this question.
https://wn.com/Does_Our_Galaxy_Have_A_Habitable_Zone
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it.
Support us at: http://www.patreon.com/universetoday
More stories at: http://www.universetoday.com/
Follow us on Twitter: @universetoday
Follow us on Tumblr: http://universetoday.tumblr.com/
Like us on Facebook: https://www.facebook.com/universetoday
Google+ - https://plus.google.com/+universetoday/
Instagram - http://instagram.com/universetoday
Team: Fraser Cain - @fcain
Jason Harmer - @jasoncharmer
Chad Weber - weber.chad@gmail.com
Created by: Fraser Cain and Jason Harmer
Edited by: Chad Weber
Music: Left Spine Down - “X-Ray”
https://www.youtube.com/watch?v=4tcoZNrSveE
I’ve got to say, you are one of the luckiest people I’ve ever met.
For starters, you are the descendant of an incomprehensible number of lifeforms who were successful, and survived long enough to find a partner, procreate, and have an offspring. Billions of years, and you are the result of an unbroken chain of success, surviving through global catastrophe after catastrophe.
Nice going.
Not only that, but your lineage happened to be born on a planet, which was in just the right location around just the right kind of star. Not too hot, not too cold, just the right temperature where liquid water, and whatever else was necessary for life to get going.
Again, I like your lucky streak.
In fact, you happened to be born into a Universe that has the right physical constants, like the force of gravity or the binding force of atoms, so that stars, planets and even the chemistry of life could happen at all.
But there’s another lottery you won, and you probably didn’t even know about it. You happened to be born on an unassuming, mostly harmless planet orbiting a G-type main sequence star in the habitable zone of the Milky Way.
Wait a second, even galaxies have habitable zones? Yep, and you’re in it right now.
The Milky Way is a big place, measuring up to 180,000 light years across. It contains 100 to 400 billion stars spread across this enormous volume.
We’re located about 27,000 light years away from the center of the Milky Way, and tens of thousands of light-years away from the outer rim.
The Milky Way has some really uninhabitable zones. Down near the center of the galaxy, the density of stars is much greater. And these stars are blasting out a combined radiation that would make it much more unlikely for life to evolve.
Radiation is bad for life. But it gets worse. There’s a huge cloud of comets around the Sun known as the Oort Cloud. Some of the greatest catastrophes in history happened when these comets were kicked into a collision course with the Earth by a passing star. Closer to the galactic core, these disruptions would happen much more often.
There’s another dangerous place you don’t want to be: the galaxy’s spiral arms. These are regions of increased density in the galaxy, where star formation is much more common. And newly forming stars blast out dangerous radiation.
Fortunately, we’re far away from the spiral arms, and we orbit the center of the Milky Way in a nice circular orbit, which means we don’t cross these spiral arms very often.
We stay nice and far away from the dangerous parts of the Milky Way, however, we’re still close enough to the action that our Solar System gathered the elements we needed for life.
The first stars in the Universe only had hydrogen, helium and a few other trace elements left over from the Big Bang. But when the largest stars detonated as supernovae, they seeded the surrounding regions with heavier elements like oxygen, carbon, even iron and gold.
Our solar nebula was seeded with the heavy elements from many generations of stars, giving us all the raw materials to help set evolution in motion.
If the Solar System was further out, we probably wouldn’t have gotten enough of those heavier elements. So, thanks multiple generations of dead stars.
According to astrobiologists the galactic habitable zone probably starts just outside the galactic bulge - about 13,000 light-years from the center, and ends about halfway out in the disk, 33,000 light-years from the center.
Remember, we’re 27,000 light-years from the center, so just inside that outer edge. Phew.
Of course, not all astronomers believe in this Rare Earth hypothesis. In fact, just as we’re finding life on Earth wherever we find water, they believe that life is more robust and resilient. It could still survive and even thrive with more radiation, and less heavier elements.
Furthermore, we’re learning that solar systems might be able to migrate a significant distance from where they formed. Stars that started closer in where there were plenty of heavier elements might have drifted outward to the safer, calmer galactic suburbs, giving life a better chance at getting a foothold.
As always, we’ll need more data, more research to get an answer to this question.
- published: 19 Sep 2016
- views: 12845
What is the Habitable Zone?
- Order: Reorder
- Duration: 3:24
- Updated: 12 May 2014
- views: 1653
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
https://wn.com/What_Is_The_Habitable_Zone
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
- published: 12 May 2014
- views: 1653
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
- Order: Reorder
- Duration: 38:26
- Updated: 26 Feb 2017
- views: 28
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located i...
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone.
“This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question ‘are we alone’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.”
At about 40 light-years (235 trillion miles) from Earth, the system of planets is relatively close to us, in the constellation Aquarius. Because they are located outside of our solar system, these planets are scientifically known as exoplanets.
This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile. In May 2016, researchers using TRAPPIST announced they had discovered three planets in the system. Assisted by several ground-based telescopes, including the European Southern Observatory's Very Large Telescope, Spitzer confirmed the existence of two of these planets and discovered five additional ones, increasing the number of known planets in the system to seven.
The new results were published Wednesday in the journal Nature, and announced at a news briefing at NASA Headquarters in Washington.
Using Spitzer data, the team precisely measured the sizes of the seven planets and developed first estimates of the masses of six of them, allowing their density to be estimated.
Based on their densities, all of the TRAPPIST-1 planets are likely to be rocky. Further observations will not only help determine whether they are rich in water, but also possibly reveal whether any could have liquid water on their surfaces. The mass of the seventh and farthest exoplanet has not yet been estimated – scientists believe it could be an icy, "snowball-like" world, but further observations are needed.
"The seven wonders of TRAPPIST-1 are the first Earth-size planets that have been found orbiting this kind of star," said Michael Gillon, lead author of the paper and the principal investigator of the TRAPPIST exoplanet survey at the University of Liege, Belgium. "It is also the best target yet for studying the atmospheres of potentially habitable, Earth-size worlds."
Spitzer, Hubble, and Kepler will help astronomers plan for follow-up studies using NASA's upcoming James Webb Space Telescope, launching in 2018. With much greater sensitivity, Webb will be able to detect the chemical fingerprints of water, methane, oxygen, ozone, and other components of a planet's atmosphere. Webb also will analyze planets' temperatures and surface pressures – key factors in assessing their habitability.
NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate. Science operations are conducted at the Spitzer Science Center, at Caltech, in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.
Source: https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around
CREDITS: National Aeronautics and Space Administration - www.nasa.gov
Like:) Subscribe:) Share:) and Enjoy:)
https://wn.com/Nasa’S_Spitzer_Reveals_Largest_Batch_Of_Earth_Size,_Habitable_Zone_Planets_Around_A_Single_Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone.
“This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question ‘are we alone’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.”
At about 40 light-years (235 trillion miles) from Earth, the system of planets is relatively close to us, in the constellation Aquarius. Because they are located outside of our solar system, these planets are scientifically known as exoplanets.
This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile. In May 2016, researchers using TRAPPIST announced they had discovered three planets in the system. Assisted by several ground-based telescopes, including the European Southern Observatory's Very Large Telescope, Spitzer confirmed the existence of two of these planets and discovered five additional ones, increasing the number of known planets in the system to seven.
The new results were published Wednesday in the journal Nature, and announced at a news briefing at NASA Headquarters in Washington.
Using Spitzer data, the team precisely measured the sizes of the seven planets and developed first estimates of the masses of six of them, allowing their density to be estimated.
Based on their densities, all of the TRAPPIST-1 planets are likely to be rocky. Further observations will not only help determine whether they are rich in water, but also possibly reveal whether any could have liquid water on their surfaces. The mass of the seventh and farthest exoplanet has not yet been estimated – scientists believe it could be an icy, "snowball-like" world, but further observations are needed.
"The seven wonders of TRAPPIST-1 are the first Earth-size planets that have been found orbiting this kind of star," said Michael Gillon, lead author of the paper and the principal investigator of the TRAPPIST exoplanet survey at the University of Liege, Belgium. "It is also the best target yet for studying the atmospheres of potentially habitable, Earth-size worlds."
Spitzer, Hubble, and Kepler will help astronomers plan for follow-up studies using NASA's upcoming James Webb Space Telescope, launching in 2018. With much greater sensitivity, Webb will be able to detect the chemical fingerprints of water, methane, oxygen, ozone, and other components of a planet's atmosphere. Webb also will analyze planets' temperatures and surface pressures – key factors in assessing their habitability.
NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate. Science operations are conducted at the Spitzer Science Center, at Caltech, in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.
Source: https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around
CREDITS: National Aeronautics and Space Administration - www.nasa.gov
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- published: 26 Feb 2017
- views: 28
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
- Order: Reorder
- Duration: 10:59
- Updated: 03 Feb 2017
- views: 2857
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our pla...
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change.
Patreon page:
https://www.patreon.com/user?u=2318196&ty;=h
Enjoy and please subscribe.
Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x
Twitter: https://twitter.com/WhatDaMath
Facebook: https://www.facebook.com/whatdamath
Twitch: http://www.twitch.tv/whatdamath
https://wn.com/Earth_In_Habitable_Zones_Of_Other_Famous_Stars_In_Universe_Sandbox_2
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change.
Patreon page:
https://www.patreon.com/user?u=2318196&ty;=h
Enjoy and please subscribe.
Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x
Twitter: https://twitter.com/WhatDaMath
Facebook: https://www.facebook.com/whatdamath
Twitch: http://www.twitch.tv/whatdamath
- published: 03 Feb 2017
- views: 2857
Finding a New Earth: Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 13 Jun 2016
- views: 1512
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those...
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
https://wn.com/Finding_A_New_Earth_Exoplanets_And_The_Habitable_Zone
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
- published: 13 Jun 2016
- views: 1512
Moving Mars to the Habitable Zone
- Order: Reorder
- Duration: 1:53
- Updated: 24 Apr 2017
- views: 327
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
https://wn.com/Moving_Mars_To_The_Habitable_Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
- published: 24 Apr 2017
- views: 327
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
- Order: Reorder
- Duration: 3:28
- Updated: 24 Feb 2017
- views: 4044
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets aro...
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary of Friendship 7 Flight!
https://wn.com/The_Most_Earth_Size,_Habitable_Zone_Planets_Around_A_Single_Star_On_This_Week_Nasa_–_02_24_2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary of Friendship 7 Flight!
- published: 24 Feb 2017
- views: 4044
-
What Is The Habitable Zone?
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's. The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo. The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question. We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumpt...
published: 29 Jun 2015 -
NASA discovers Earth-like planet in 'habitable zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
published: 24 Jul 2015 -
Galactic Habitable Zone - 7 considerations
...ever wanted to build your own galaxy? Here's how!! Facebook: http://goo.gl/h5Pobh Twitter: https://twitter.com/Artifexian Galactic Habitable Zone Article: http://en.wikipedia.org/wiki/Galactic_habitable_zone
published: 28 Apr 2014 -
Does Our Galaxy Have a Habitable Zone?
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it. Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Follow us on Tumblr: http://universetoday.tumblr.com/ Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain Jason Harmer - @jasoncharmer Chad Weber - weber.chad@gmail.com Created by: Fraser Cain and Jason Harmer Edited by: Chad Weber Music: Left Spine Down - “X-Ray” https://www.youtube.com/watch?v=4tcoZNrSveE I’ve got to say, you are one of the luckiest people I’v...
published: 19 Sep 2016 -
What is the Habitable Zone?
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
published: 12 May 2014 -
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone. “This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission...
published: 26 Feb 2017 -
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Hello and welcome to What Da Math! In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change. Patreon page: https://www.patreon.com/user?u=2318196&ty;=h Enjoy and please subscribe. Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x Twitter: https://twitter.com/WhatDaMath Facebook: https://www.facebook.com/whatdamath Twitch: http://www.twitch.tv/whatdamath
published: 03 Feb 2017 -
Finding a New Earth: Exoplanets and the Habitable Zone
Dr. Stephen Kane (San Francisco State University) Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
published: 13 Jun 2016 -
Moving Mars to the Habitable Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
published: 24 Apr 2017 -
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary ...
published: 24 Feb 2017
What Is The Habitable Zone?
- Order: Reorder
- Duration: 5:09
- Updated: 29 Jun 2015
- views: 14267
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in y...
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo.
The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question.
We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumption causes.
There could be agendas to push for cleaner energy sources, or driving politicians towards climate change denial to maintain nefarious financial gain.
We also might need a new lilypad to jump to, assuming we can sort out the travel obstacles. The thing that interests me personally the most is, when can I see an alien?
The habitable zone, also known as the “Goldilocks Zone”, is the region around a star where the average temperature on a planet allows for liquid water with which to make porridge. It’s that liquid water that we hunt for not only for our future uses, but as an indicator of where alien life could be in the Universe.
Problems outside this range are pretty obvious. Too hot, it’s a perpetual steam bath, or it produces separate piles of hydrogen and oxygen. Then your oxygen combines with carbon to form carbon dioxide, and then hydrogen just buggers off into space.
This is what happened with Venus. If the planet’s too cold, then bodies of water are solid skating rinks. There could be pockets of liquid water deep beneath the icy surface, but overall, they’re bad places to live.
We’ve got this on Mars and the moons of Jupiter and Saturn. The habitable zone is a rough measurement. It’s a place where liquid water might exist.
Unfortunately, it’s not just a simple equation of the distance to the star versus the amount of energy output. The atmosphere of the planet matters a lot. In fact, both Venus and Mars are considered to be within the Solar System’s habitable zone.
Venusian atmosphere is so thick with carbon dioxide that it traps energy from the Sun and creates an inhospitable oven of heat that would quickboil any life faster than you can say “pass the garlic butter”.
It’s the opposite on Mars. The thin atmosphere won’t trap any heat at all, so the planet is bun-chillingly cold. Upgrade the atmospheres of either planet and you could get worlds which would be perfectly reasonable to live on. Maybe if we could bash them together and we could spill the atmosphere of one onto the other? Tell Blackbolt to ring up Franklin Richards, I have an idea!
When we look at other worlds in the Milky Way and wonder if they have life, it’s not enough to just check to see if they’re in the habitable zone. We need to know what shape their atmosphere is in.
Astronomers have actually discovered planets located in the habitable zones around other stars, but from what we can tell, they’re probably not places you’d want to live. They’re all orbiting red dwarf stars.
It doesn’t sound too bad to live in a red tinted landscape, provided it came with an Angelo Badalamenti soundtrack, red dwarf stars are extremely violent in their youth. They blast out enormous solar flares and coronal mass ejections. These would scour the surface of any planets caught orbiting them close enough for liquid water to be present.
There is some hope. After a few hundred million years of high activity, these red dwarf stars settle down and sip away at their fuel reserves of hydrogen for potentially trillions of years. If life can hold on long enough to get through the early stages, it might have a long existence ahead of it.
When you’re thinking about a new home among the stars, or trying to seek out new life in the Universe, look for planets in the habitable zone.
As we’ve seen, it’s only a rough guideline. You probably want to check out the place first and make sure it’s truly liveable before you commit to a timeshare condo around Gliese 581.
https://wn.com/What_Is_The_Habitable_Zone
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the right combination of factors to hold life like Earth's.
The weather in your hometown is downright uninhabitable. There’s scorching heatwaves, annual tyhpoonic deluges, and snow deep enough to bury a corn silo.
The bad news is planet Earth is the only habitable place we know of in the entire Universe. Also, are the Niburians suffering from Niburian made climate change? Only Niburian Al Gore can answer that question.
We as a species are interested in habitability for an assortment of reasons, political, financial, humanitarian and scientific. We want to understand how our own climate is changing. How we’ll live in the climate of the future and what we can do to stem the tide of what our carbon consumption causes.
There could be agendas to push for cleaner energy sources, or driving politicians towards climate change denial to maintain nefarious financial gain.
We also might need a new lilypad to jump to, assuming we can sort out the travel obstacles. The thing that interests me personally the most is, when can I see an alien?
The habitable zone, also known as the “Goldilocks Zone”, is the region around a star where the average temperature on a planet allows for liquid water with which to make porridge. It’s that liquid water that we hunt for not only for our future uses, but as an indicator of where alien life could be in the Universe.
Problems outside this range are pretty obvious. Too hot, it’s a perpetual steam bath, or it produces separate piles of hydrogen and oxygen. Then your oxygen combines with carbon to form carbon dioxide, and then hydrogen just buggers off into space.
This is what happened with Venus. If the planet’s too cold, then bodies of water are solid skating rinks. There could be pockets of liquid water deep beneath the icy surface, but overall, they’re bad places to live.
We’ve got this on Mars and the moons of Jupiter and Saturn. The habitable zone is a rough measurement. It’s a place where liquid water might exist.
Unfortunately, it’s not just a simple equation of the distance to the star versus the amount of energy output. The atmosphere of the planet matters a lot. In fact, both Venus and Mars are considered to be within the Solar System’s habitable zone.
Venusian atmosphere is so thick with carbon dioxide that it traps energy from the Sun and creates an inhospitable oven of heat that would quickboil any life faster than you can say “pass the garlic butter”.
It’s the opposite on Mars. The thin atmosphere won’t trap any heat at all, so the planet is bun-chillingly cold. Upgrade the atmospheres of either planet and you could get worlds which would be perfectly reasonable to live on. Maybe if we could bash them together and we could spill the atmosphere of one onto the other? Tell Blackbolt to ring up Franklin Richards, I have an idea!
When we look at other worlds in the Milky Way and wonder if they have life, it’s not enough to just check to see if they’re in the habitable zone. We need to know what shape their atmosphere is in.
Astronomers have actually discovered planets located in the habitable zones around other stars, but from what we can tell, they’re probably not places you’d want to live. They’re all orbiting red dwarf stars.
It doesn’t sound too bad to live in a red tinted landscape, provided it came with an Angelo Badalamenti soundtrack, red dwarf stars are extremely violent in their youth. They blast out enormous solar flares and coronal mass ejections. These would scour the surface of any planets caught orbiting them close enough for liquid water to be present.
There is some hope. After a few hundred million years of high activity, these red dwarf stars settle down and sip away at their fuel reserves of hydrogen for potentially trillions of years. If life can hold on long enough to get through the early stages, it might have a long existence ahead of it.
When you’re thinking about a new home among the stars, or trying to seek out new life in the Universe, look for planets in the habitable zone.
As we’ve seen, it’s only a rough guideline. You probably want to check out the place first and make sure it’s truly liveable before you commit to a timeshare condo around Gliese 581.
- published: 29 Jun 2015
- views: 14267
NASA discovers Earth-like planet in 'habitable zone...
- Order: Reorder
- Duration: 3:06
- Updated: 24 Jul 2015
- views: 110580
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
https://wn.com/Nasa_Discovers_Earth_Like_Planet_In_'Habitable_Zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in a "habitable zone."
- published: 24 Jul 2015
- views: 110580
Galactic Habitable Zone - 7 considerations
- Order: Reorder
- Duration: 3:06
- Updated: 28 Apr 2014
- views: 41643
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twitter:
https://twitter.com/Artifexian
Galactic Habitable Zone Article:...
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twitter:
https://twitter.com/Artifexian
Galactic Habitable Zone Article:
http://en.wikipedia.org/wiki/Galactic_habitable_zone
https://wn.com/Galactic_Habitable_Zone_7_Considerations
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twitter:
https://twitter.com/Artifexian
Galactic Habitable Zone Article:
http://en.wikipedia.org/wiki/Galactic_habitable_zone
- published: 28 Apr 2014
- views: 41643
Does Our Galaxy Have a Habitable Zone?
- Order: Reorder
- Duration: 6:01
- Updated: 19 Sep 2016
- views: 12845
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know ...
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it.
Support us at: http://www.patreon.com/universetoday
More stories at: http://www.universetoday.com/
Follow us on Twitter: @universetoday
Follow us on Tumblr: http://universetoday.tumblr.com/
Like us on Facebook: https://www.facebook.com/universetoday
Google+ - https://plus.google.com/+universetoday/
Instagram - http://instagram.com/universetoday
Team: Fraser Cain - @fcain
Jason Harmer - @jasoncharmer
Chad Weber - weber.chad@gmail.com
Created by: Fraser Cain and Jason Harmer
Edited by: Chad Weber
Music: Left Spine Down - “X-Ray”
https://www.youtube.com/watch?v=4tcoZNrSveE
I’ve got to say, you are one of the luckiest people I’ve ever met.
For starters, you are the descendant of an incomprehensible number of lifeforms who were successful, and survived long enough to find a partner, procreate, and have an offspring. Billions of years, and you are the result of an unbroken chain of success, surviving through global catastrophe after catastrophe.
Nice going.
Not only that, but your lineage happened to be born on a planet, which was in just the right location around just the right kind of star. Not too hot, not too cold, just the right temperature where liquid water, and whatever else was necessary for life to get going.
Again, I like your lucky streak.
In fact, you happened to be born into a Universe that has the right physical constants, like the force of gravity or the binding force of atoms, so that stars, planets and even the chemistry of life could happen at all.
But there’s another lottery you won, and you probably didn’t even know about it. You happened to be born on an unassuming, mostly harmless planet orbiting a G-type main sequence star in the habitable zone of the Milky Way.
Wait a second, even galaxies have habitable zones? Yep, and you’re in it right now.
The Milky Way is a big place, measuring up to 180,000 light years across. It contains 100 to 400 billion stars spread across this enormous volume.
We’re located about 27,000 light years away from the center of the Milky Way, and tens of thousands of light-years away from the outer rim.
The Milky Way has some really uninhabitable zones. Down near the center of the galaxy, the density of stars is much greater. And these stars are blasting out a combined radiation that would make it much more unlikely for life to evolve.
Radiation is bad for life. But it gets worse. There’s a huge cloud of comets around the Sun known as the Oort Cloud. Some of the greatest catastrophes in history happened when these comets were kicked into a collision course with the Earth by a passing star. Closer to the galactic core, these disruptions would happen much more often.
There’s another dangerous place you don’t want to be: the galaxy’s spiral arms. These are regions of increased density in the galaxy, where star formation is much more common. And newly forming stars blast out dangerous radiation.
Fortunately, we’re far away from the spiral arms, and we orbit the center of the Milky Way in a nice circular orbit, which means we don’t cross these spiral arms very often.
We stay nice and far away from the dangerous parts of the Milky Way, however, we’re still close enough to the action that our Solar System gathered the elements we needed for life.
The first stars in the Universe only had hydrogen, helium and a few other trace elements left over from the Big Bang. But when the largest stars detonated as supernovae, they seeded the surrounding regions with heavier elements like oxygen, carbon, even iron and gold.
Our solar nebula was seeded with the heavy elements from many generations of stars, giving us all the raw materials to help set evolution in motion.
If the Solar System was further out, we probably wouldn’t have gotten enough of those heavier elements. So, thanks multiple generations of dead stars.
According to astrobiologists the galactic habitable zone probably starts just outside the galactic bulge - about 13,000 light-years from the center, and ends about halfway out in the disk, 33,000 light-years from the center.
Remember, we’re 27,000 light-years from the center, so just inside that outer edge. Phew.
Of course, not all astronomers believe in this Rare Earth hypothesis. In fact, just as we’re finding life on Earth wherever we find water, they believe that life is more robust and resilient. It could still survive and even thrive with more radiation, and less heavier elements.
Furthermore, we’re learning that solar systems might be able to migrate a significant distance from where they formed. Stars that started closer in where there were plenty of heavier elements might have drifted outward to the safer, calmer galactic suburbs, giving life a better chance at getting a foothold.
As always, we’ll need more data, more research to get an answer to this question.
https://wn.com/Does_Our_Galaxy_Have_A_Habitable_Zone
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it.
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Team: Fraser Cain - @fcain
Jason Harmer - @jasoncharmer
Chad Weber - weber.chad@gmail.com
Created by: Fraser Cain and Jason Harmer
Edited by: Chad Weber
Music: Left Spine Down - “X-Ray”
https://www.youtube.com/watch?v=4tcoZNrSveE
I’ve got to say, you are one of the luckiest people I’ve ever met.
For starters, you are the descendant of an incomprehensible number of lifeforms who were successful, and survived long enough to find a partner, procreate, and have an offspring. Billions of years, and you are the result of an unbroken chain of success, surviving through global catastrophe after catastrophe.
Nice going.
Not only that, but your lineage happened to be born on a planet, which was in just the right location around just the right kind of star. Not too hot, not too cold, just the right temperature where liquid water, and whatever else was necessary for life to get going.
Again, I like your lucky streak.
In fact, you happened to be born into a Universe that has the right physical constants, like the force of gravity or the binding force of atoms, so that stars, planets and even the chemistry of life could happen at all.
But there’s another lottery you won, and you probably didn’t even know about it. You happened to be born on an unassuming, mostly harmless planet orbiting a G-type main sequence star in the habitable zone of the Milky Way.
Wait a second, even galaxies have habitable zones? Yep, and you’re in it right now.
The Milky Way is a big place, measuring up to 180,000 light years across. It contains 100 to 400 billion stars spread across this enormous volume.
We’re located about 27,000 light years away from the center of the Milky Way, and tens of thousands of light-years away from the outer rim.
The Milky Way has some really uninhabitable zones. Down near the center of the galaxy, the density of stars is much greater. And these stars are blasting out a combined radiation that would make it much more unlikely for life to evolve.
Radiation is bad for life. But it gets worse. There’s a huge cloud of comets around the Sun known as the Oort Cloud. Some of the greatest catastrophes in history happened when these comets were kicked into a collision course with the Earth by a passing star. Closer to the galactic core, these disruptions would happen much more often.
There’s another dangerous place you don’t want to be: the galaxy’s spiral arms. These are regions of increased density in the galaxy, where star formation is much more common. And newly forming stars blast out dangerous radiation.
Fortunately, we’re far away from the spiral arms, and we orbit the center of the Milky Way in a nice circular orbit, which means we don’t cross these spiral arms very often.
We stay nice and far away from the dangerous parts of the Milky Way, however, we’re still close enough to the action that our Solar System gathered the elements we needed for life.
The first stars in the Universe only had hydrogen, helium and a few other trace elements left over from the Big Bang. But when the largest stars detonated as supernovae, they seeded the surrounding regions with heavier elements like oxygen, carbon, even iron and gold.
Our solar nebula was seeded with the heavy elements from many generations of stars, giving us all the raw materials to help set evolution in motion.
If the Solar System was further out, we probably wouldn’t have gotten enough of those heavier elements. So, thanks multiple generations of dead stars.
According to astrobiologists the galactic habitable zone probably starts just outside the galactic bulge - about 13,000 light-years from the center, and ends about halfway out in the disk, 33,000 light-years from the center.
Remember, we’re 27,000 light-years from the center, so just inside that outer edge. Phew.
Of course, not all astronomers believe in this Rare Earth hypothesis. In fact, just as we’re finding life on Earth wherever we find water, they believe that life is more robust and resilient. It could still survive and even thrive with more radiation, and less heavier elements.
Furthermore, we’re learning that solar systems might be able to migrate a significant distance from where they formed. Stars that started closer in where there were plenty of heavier elements might have drifted outward to the safer, calmer galactic suburbs, giving life a better chance at getting a foothold.
As always, we’ll need more data, more research to get an answer to this question.
- published: 19 Sep 2016
- views: 12845
What is the Habitable Zone?
- Order: Reorder
- Duration: 3:24
- Updated: 12 May 2014
- views: 1653
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
https://wn.com/What_Is_The_Habitable_Zone
A basic introduction to the concept of habitable zones, focusing on liquid water as a determining factor.
- published: 12 May 2014
- views: 1653
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
- Order: Reorder
- Duration: 38:26
- Updated: 26 Feb 2017
- views: 28
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located i...
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone.
“This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question ‘are we alone’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.”
At about 40 light-years (235 trillion miles) from Earth, the system of planets is relatively close to us, in the constellation Aquarius. Because they are located outside of our solar system, these planets are scientifically known as exoplanets.
This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile. In May 2016, researchers using TRAPPIST announced they had discovered three planets in the system. Assisted by several ground-based telescopes, including the European Southern Observatory's Very Large Telescope, Spitzer confirmed the existence of two of these planets and discovered five additional ones, increasing the number of known planets in the system to seven.
The new results were published Wednesday in the journal Nature, and announced at a news briefing at NASA Headquarters in Washington.
Using Spitzer data, the team precisely measured the sizes of the seven planets and developed first estimates of the masses of six of them, allowing their density to be estimated.
Based on their densities, all of the TRAPPIST-1 planets are likely to be rocky. Further observations will not only help determine whether they are rich in water, but also possibly reveal whether any could have liquid water on their surfaces. The mass of the seventh and farthest exoplanet has not yet been estimated – scientists believe it could be an icy, "snowball-like" world, but further observations are needed.
"The seven wonders of TRAPPIST-1 are the first Earth-size planets that have been found orbiting this kind of star," said Michael Gillon, lead author of the paper and the principal investigator of the TRAPPIST exoplanet survey at the University of Liege, Belgium. "It is also the best target yet for studying the atmospheres of potentially habitable, Earth-size worlds."
Spitzer, Hubble, and Kepler will help astronomers plan for follow-up studies using NASA's upcoming James Webb Space Telescope, launching in 2018. With much greater sensitivity, Webb will be able to detect the chemical fingerprints of water, methane, oxygen, ozone, and other components of a planet's atmosphere. Webb also will analyze planets' temperatures and surface pressures – key factors in assessing their habitability.
NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate. Science operations are conducted at the Spitzer Science Center, at Caltech, in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.
Source: https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around
CREDITS: National Aeronautics and Space Administration - www.nasa.gov
Like:) Subscribe:) Share:) and Enjoy:)
https://wn.com/Nasa’S_Spitzer_Reveals_Largest_Batch_Of_Earth_Size,_Habitable_Zone_Planets_Around_A_Single_Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone.
“This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question ‘are we alone’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.”
At about 40 light-years (235 trillion miles) from Earth, the system of planets is relatively close to us, in the constellation Aquarius. Because they are located outside of our solar system, these planets are scientifically known as exoplanets.
This exoplanet system is called TRAPPIST-1, named for The Transiting Planets and Planetesimals Small Telescope (TRAPPIST) in Chile. In May 2016, researchers using TRAPPIST announced they had discovered three planets in the system. Assisted by several ground-based telescopes, including the European Southern Observatory's Very Large Telescope, Spitzer confirmed the existence of two of these planets and discovered five additional ones, increasing the number of known planets in the system to seven.
The new results were published Wednesday in the journal Nature, and announced at a news briefing at NASA Headquarters in Washington.
Using Spitzer data, the team precisely measured the sizes of the seven planets and developed first estimates of the masses of six of them, allowing their density to be estimated.
Based on their densities, all of the TRAPPIST-1 planets are likely to be rocky. Further observations will not only help determine whether they are rich in water, but also possibly reveal whether any could have liquid water on their surfaces. The mass of the seventh and farthest exoplanet has not yet been estimated – scientists believe it could be an icy, "snowball-like" world, but further observations are needed.
"The seven wonders of TRAPPIST-1 are the first Earth-size planets that have been found orbiting this kind of star," said Michael Gillon, lead author of the paper and the principal investigator of the TRAPPIST exoplanet survey at the University of Liege, Belgium. "It is also the best target yet for studying the atmospheres of potentially habitable, Earth-size worlds."
Spitzer, Hubble, and Kepler will help astronomers plan for follow-up studies using NASA's upcoming James Webb Space Telescope, launching in 2018. With much greater sensitivity, Webb will be able to detect the chemical fingerprints of water, methane, oxygen, ozone, and other components of a planet's atmosphere. Webb also will analyze planets' temperatures and surface pressures – key factors in assessing their habitability.
NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate. Science operations are conducted at the Spitzer Science Center, at Caltech, in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at Caltech/IPAC. Caltech manages JPL for NASA.
Source: https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around
CREDITS: National Aeronautics and Space Administration - www.nasa.gov
Like:) Subscribe:) Share:) and Enjoy:)
- published: 26 Feb 2017
- views: 28
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
- Order: Reorder
- Duration: 10:59
- Updated: 03 Feb 2017
- views: 2857
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our pla...
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change.
Patreon page:
https://www.patreon.com/user?u=2318196&ty;=h
Enjoy and please subscribe.
Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x
Twitter: https://twitter.com/WhatDaMath
Facebook: https://www.facebook.com/whatdamath
Twitch: http://www.twitch.tv/whatdamath
https://wn.com/Earth_In_Habitable_Zones_Of_Other_Famous_Stars_In_Universe_Sandbox_2
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of famous stars and place Earth in them discovering how the year on our planet would change.
Patreon page:
https://www.patreon.com/user?u=2318196&ty;=h
Enjoy and please subscribe.
Other videos here: https://www.youtube.com/playlist?list=PL9hNFus3sjE7jgrGJYkZeTpR7lnyVAk-x
Twitter: https://twitter.com/WhatDaMath
Facebook: https://www.facebook.com/whatdamath
Twitch: http://www.twitch.tv/whatdamath
- published: 03 Feb 2017
- views: 2857
Finding a New Earth: Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 13 Jun 2016
- views: 1512
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those...
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
https://wn.com/Finding_A_New_Earth_Exoplanets_And_The_Habitable_Zone
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have been discovered, many of which include planets quite different from those in our own Solar System. A key step towards finding “Earth 2.0” will be to identify rocky planets that occupy the “Habitable Zone” of their stars. Dr. Kane describes what the idea of a Habitable Zone means and shows examples of planets that lie in their star’s Habitable Zone (even if the star is not like our Sun.)
- published: 13 Jun 2016
- views: 1512
Moving Mars to the Habitable Zone
- Order: Reorder
- Duration: 1:53
- Updated: 24 Apr 2017
- views: 327
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
https://wn.com/Moving_Mars_To_The_Habitable_Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
- published: 24 Apr 2017
- views: 327
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
- Order: Reorder
- Duration: 3:28
- Updated: 24 Feb 2017
- views: 4044
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets aro...
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary of Friendship 7 Flight!
https://wn.com/The_Most_Earth_Size,_Habitable_Zone_Planets_Around_A_Single_Star_On_This_Week_Nasa_–_02_24_2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by the agency’s Spitzer Space Telescope of seven Earth-sized planets around a tiny, relatively nearby, ultra-cool dwarf star. Three of the planets in this system, known as TRAPPIST-1, are in the habitable zone – the region around the star in which liquid water is most likely to thrive on a rocky planet. This is the first time so many planets have been found in a single star's habitable zone outside our solar system, and is the best target yet for studying the atmospheres of potentially habitable, Earth-sized worlds. Also, Kennedy’s Pad 39A, Back in Business, Russian Cargo Ship Arrives at Space Station, RS-25 Engine Tests Resume at Stennis, Structural Testing Begins on SLS Hardware, and 55th Anniversary of Friendship 7 Flight!
- published: 24 Feb 2017
- views: 4044
-
Finding a New Earth Exoplanets and the Habitable Zone
Exoplanets and the Habitable Zone
published: 21 Oct 2016 -
Finding a New Earth Exoplanets and the Habitable Zone
published: 02 Nov 2016 -
Finding a New Earth Exoplanets and the Habitable Zone YouTube
published: 15 Feb 2017 -
Finding a New Earth Exoplanets and the Habitable Zone
published: 17 Jan 2017 -
Finding a New Earth Exoplanets and the Habitable Zone
published: 17 Jan 2017 -
Finding a New Earth Exoplanets and the Habitable Zone YouTube
published: 15 Feb 2017 -
Finding a New Earth Exoplanets and the Habitable Zone
published: 03 Jan 2017 -
Finding a New Earth Exoplanets and the Habitable Zone anime0401
published: 03 Jan 2017 -
Finding a New Earth Exoplanets and the Habitable Zone
published: 15 Sep 2016 -
Finding a New Earth Exoplanets and the Habitable Zone
published: 06 Aug 2016
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 21 Oct 2016
- views: 8
Exoplanets and the Habitable Zone
Exoplanets and the Habitable Zone
https://wn.com/Finding_A_New_Earth_Exoplanets_And_The_Habitable_Zone
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 02 Nov 2016
- views: 358
- published: 02 Nov 2016
- views: 358
Finding a New Earth Exoplanets and the Habitable Zone YouTube
- Order: Reorder
- Duration: 1:22:44
- Updated: 15 Feb 2017
- views: 1
- published: 15 Feb 2017
- views: 1
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 17 Jan 2017
- views: 3
- published: 17 Jan 2017
- views: 3
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:18:44
- Updated: 17 Jan 2017
- views: 2
- published: 17 Jan 2017
- views: 2
Finding a New Earth Exoplanets and the Habitable Zone YouTube
- Order: Reorder
- Duration: 1:18:44
- Updated: 15 Feb 2017
- views: 1
- published: 15 Feb 2017
- views: 1
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 03 Jan 2017
- views: 62
- published: 03 Jan 2017
- views: 62
Finding a New Earth Exoplanets and the Habitable Zone anime0401
- Order: Reorder
- Duration: 1:22:44
- Updated: 03 Jan 2017
- views: 0
- published: 03 Jan 2017
- views: 0
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 15 Sep 2016
- views: 2
- published: 15 Sep 2016
- views: 2
Finding a New Earth Exoplanets and the Habitable Zone
- Order: Reorder
- Duration: 1:22:44
- Updated: 06 Aug 2016
- views: 16
- published: 06 Aug 2016
- views: 16
- Playlist
- Chat
5:09
What Is The Habitable Zone?
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the rig...
published: 29 Jun 2015
What Is The Habitable Zone?
What Is The Habitable Zone?
- Report rights infringement
- published: 29 Jun 2015
- views: 14267
3:06
NASA discovers Earth-like planet in 'habitable zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first near...
published: 24 Jul 2015
NASA discovers Earth-like planet in 'habitable zone...
NASA discovers Earth-like planet in 'habitable zone...
- Report rights infringement
- published: 24 Jul 2015
- views: 110580
3:06
Galactic Habitable Zone - 7 considerations
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twi...
published: 28 Apr 2014
Galactic Habitable Zone - 7 considerations
Galactic Habitable Zone - 7 considerations
- Report rights infringement
- published: 28 Apr 2014
- views: 41643
6:01
Does Our Galaxy Have a Habitable Zone?
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy h...
published: 19 Sep 2016
Does Our Galaxy Have a Habitable Zone?
Does Our Galaxy Have a Habitable Zone?
- Report rights infringement
- published: 19 Sep 2016
- views: 12845
3:24
What is the Habitable Zone?
A basic introduction to the concept of habitable zones, focusing on liquid water as a dete...
published: 12 May 2014
What is the Habitable Zone?
What is the Habitable Zone?
- Report rights infringement
- published: 12 May 2014
- views: 1653
38:26
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size pla...
published: 26 Feb 2017
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
- Report rights infringement
- published: 26 Feb 2017
- views: 28
10:59
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of fa...
published: 03 Feb 2017
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
- Report rights infringement
- published: 03 Feb 2017
- views: 2857
1:22:44
Finding a New Earth: Exoplanets and the Habitable Zone
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have bee...
published: 13 Jun 2016
Finding a New Earth: Exoplanets and the Habitable Zone
Finding a New Earth: Exoplanets and the Habitable Zone
- Report rights infringement
- published: 13 Jun 2016
- views: 1512
1:53
Moving Mars to the Habitable Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
published: 24 Apr 2017
Moving Mars to the Habitable Zone
Moving Mars to the Habitable Zone
- Report rights infringement
- published: 24 Apr 2017
- views: 327
3:28
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by...
published: 24 Feb 2017
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
- Report rights infringement
- published: 24 Feb 2017
- views: 4044
- Playlist
- Chat
5:09
What Is The Habitable Zone?
We've found hundreds of exoplanets in the galaxy. But only a few of them have just the rig...
published: 29 Jun 2015
What Is The Habitable Zone?
What Is The Habitable Zone?
- Report rights infringement
- published: 29 Jun 2015
- views: 14267
3:06
NASA discovers Earth-like planet in 'habitable zone...
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first near...
published: 24 Jul 2015
NASA discovers Earth-like planet in 'habitable zone...
NASA discovers Earth-like planet in 'habitable zone...
- Report rights infringement
- published: 24 Jul 2015
- views: 110580
3:06
Galactic Habitable Zone - 7 considerations
...ever wanted to build your own galaxy? Here's how!!
Facebook:
http://goo.gl/h5Pobh
Twi...
published: 28 Apr 2014
Galactic Habitable Zone - 7 considerations
Galactic Habitable Zone - 7 considerations
- Report rights infringement
- published: 28 Apr 2014
- views: 41643
6:01
Does Our Galaxy Have a Habitable Zone?
It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy h...
published: 19 Sep 2016
Does Our Galaxy Have a Habitable Zone?
Does Our Galaxy Have a Habitable Zone?
- Report rights infringement
- published: 19 Sep 2016
- views: 12845
3:24
What is the Habitable Zone?
A basic introduction to the concept of habitable zones, focusing on liquid water as a dete...
published: 12 May 2014
What is the Habitable Zone?
What is the Habitable Zone?
- Report rights infringement
- published: 12 May 2014
- views: 1653
38:26
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size pla...
published: 26 Feb 2017
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
NASA’s Spitzer Reveals Largest Batch of Earth Size, Habitable Zone Planets Around a Single Star
- Report rights infringement
- published: 26 Feb 2017
- views: 28
10:59
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Hello and welcome to What Da Math!
In this video, we will talk about habitable zones of fa...
published: 03 Feb 2017
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
Earth in Habitable Zones of Other Famous Stars in Universe Sandbox 2
- Report rights infringement
- published: 03 Feb 2017
- views: 2857
1:22:44
Finding a New Earth: Exoplanets and the Habitable Zone
Dr. Stephen Kane (San Francisco State University)
Over 1500 new planetary systems have bee...
published: 13 Jun 2016
Finding a New Earth: Exoplanets and the Habitable Zone
Finding a New Earth: Exoplanets and the Habitable Zone
- Report rights infringement
- published: 13 Jun 2016
- views: 1512
1:53
Moving Mars to the Habitable Zone
Relevant paper: https://arxiv.org/abs/astro-ph/0102126
published: 24 Apr 2017
Moving Mars to the Habitable Zone
Moving Mars to the Habitable Zone
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- published: 24 Apr 2017
- views: 327
3:28
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
NASA held a news conference Feb. 22 at the agency’s headquarters to discuss the finding by...
published: 24 Feb 2017
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
The Most Earth Size, Habitable Zone Planets around a Single Star on This Week @NASA – 02/24/2017
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- published: 24 Feb 2017
- views: 4044
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1:22:44
Finding a New Earth Exoplanets and the Habitable Zone
Exoplanets and the Habitable Zone
published: 21 Oct 2016
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 21 Oct 2016
- views: 8
1:22:44
Finding a New Earth Exoplanets and the Habitable Zone
published: 02 Nov 2016
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 02 Nov 2016
- views: 358
1:22:44
Finding a New Earth Exoplanets and the Habitable Zone YouTube
published: 15 Feb 2017
Finding a New Earth Exoplanets and the Habitable Zone YouTube
Finding a New Earth Exoplanets and the Habitable Zone YouTube
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- published: 15 Feb 2017
- views: 1
1:22:44
Finding a New Earth Exoplanets and the Habitable Zone
published: 17 Jan 2017
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 17 Jan 2017
- views: 3
1:18:44
Finding a New Earth Exoplanets and the Habitable Zone
published: 17 Jan 2017
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 17 Jan 2017
- views: 2
1:18:44
Finding a New Earth Exoplanets and the Habitable Zone YouTube
published: 15 Feb 2017
Finding a New Earth Exoplanets and the Habitable Zone YouTube
Finding a New Earth Exoplanets and the Habitable Zone YouTube
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- published: 15 Feb 2017
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1:22:44
Finding a New Earth Exoplanets and the Habitable Zone
published: 03 Jan 2017
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 03 Jan 2017
- views: 62
1:22:44
Finding a New Earth Exoplanets and the Habitable Zone anime0401
published: 03 Jan 2017
Finding a New Earth Exoplanets and the Habitable Zone anime0401
Finding a New Earth Exoplanets and the Habitable Zone anime0401
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- published: 03 Jan 2017
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1:22:44
Finding a New Earth Exoplanets and the Habitable Zone
published: 15 Sep 2016
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 15 Sep 2016
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1:22:44
Finding a New Earth Exoplanets and the Habitable Zone
published: 06 Aug 2016
Finding a New Earth Exoplanets and the Habitable Zone
Finding a New Earth Exoplanets and the Habitable Zone
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- published: 06 Aug 2016
- views: 16
Finding a New Earth Exoplanets and the Habitable ...
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Finding a New Earth Exoplanets and the Habitable Z...
Finding a New Earth Exoplanets and the Habitable ...
Finding a New Earth Exoplanets and the Habitable ...
Finding a New Earth Exoplanets and the Habitable ...
Finding a New Earth Exoplanets and the Habitable ...
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Finding a New Earth Exoplanets and the Habitable ...
Finding a New Earth Exoplanets and the Habitable...
See more photos of habitable zone
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Trump's son-in-law ready to talk with investigators about Russian contacts
Edit TVNZ 28 May 2017
President Donald Trump's son-in-law and now top White House adviser Jared Kushner proposed a secret back channel between the Kremlin and the Trump transition team during a December meeting with a leading Russian diplomat. Jared Kushner reportedly met with the Russian ambassador last year to discuss setting up a communications channel with the Kremlin. Source. Associated Press ... Tillerson was sworn in on February 1 ... ....
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Police: Suspect in Portland stabbings ranted about Muslims
Edit Atlanta Journal 27 May 2017
PORTLAND, Ore. A man who police say fatally stabbed two people who tried to stop him from yelling anti-Islamic slurs on a Portland light-rail train spent time in prison for robbery and kidnapping charges years ago, according to court records and a defense attorney ... He will make a first court appearance Monday, and it wasn't immediately clear if he had an attorney. A phone at his home in Portland rang unanswered early Saturday ... _____ ... ....
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Our galaxy produces 9 trillion kilograms of antimatter a second—how?
Edit Ars Technica 28 May 2017
(credit. NASA/DOE/Fermi LAT Collaboration). Antimatter is rare in this Universe, but the Universe is a pretty big place, so even small quantities can add up fast ... Over something the size of a galaxy, that means there are lots of the positrons around ... Mystery ... Read 11 remaining paragraphs . Comments ....
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The race to find the Manchester terrorist network
Edit The Guardian 28 May 2017
With dawn raids, multiple arrests, bomb disposal squads and armed patrols, security services battled against the clock to find Salman Abedi’s accomplices. Manchester Arena attack. The Observer. The race to find the Manchester terrorist network. With dawn raids, multiple arrests, bomb disposal squads and armed patrols, security services battled against the clock to find Salman Abedi’s accomplices ... The first clue came in the device itself ... ....
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Islamist militants kill 19 civilians in south Philippines: army
Edit Deccan Chronicle 28 May 2017
Marawi (Philippines). Islamist militants locked in street-to-street battles with security forces in a southern Philippine city have killed 19 civilians, the military said on Sunday, bringing the official death toll from nearly a week of fighting to at least 85 ... Authorities said the militants had killed 19 civilians in Marawi, a mostly Muslim-populated city of 200,000 people ... "These are civilians, women ... ....
Take This Challenge If You Want To Break Free Of Your Comfort Zone
Edit Forbes 28 May 2017
A comfort zone is a place or situation where we feel at ease and without stress. We cling to this space because it’s safe and predictable. Being comfortable with discomfort does not come naturally—it’s a learned behavior. I challenge you to take these five steps ... ....
Thousands of people trapped in conflict zone in Philippine city
Edit Fresno Bee 28 May 2017
MARAWI CITY, Philippines – More than 2,200 people are trapped in the conflict zone in a besieged southern Philippine city, fearing for their lives from threats of Islamist militants and ... ....
In war zones across the world, education is being cut out of foreign aid – ...
Edit The Independent 28 May 2017
We all know that education is a fundamental human right ... Put simply, a lack of education is a driver of extremist ideologies; in a world where there are so many conflict zones, it’s more urgent than ever that foreign aid is allocated to education that gives young people the resilience and critical skills to reject hate and violence ... Schools have become targets of war ... ....
Islami Bank Sylhet Zone Business Development Conference held
Edit Public Technologies 28 May 2017
Islami Bank Sylhet Zone Business Development Conference held. Business Development Conference of Sylhet Zone of Islami Bank Bangladesh Limited was held at The Palace Resort, Habigonj on 26 May 2017, Friday ... & Head of Sylhet Zone presided over the conference....
Rajkummar Rao Has Never Got 'Bhaizoned' by Any Woman
Edit News18 28 May 2017
Actor Rajkummar Rao, who will soon be seen in the film Behen Hogi Teri, says he has never been put in a brother's zone by any woman in whom he has even remotely been interested in ... Asked if he has faced such a situation ever in real life, Rajkummar said, "No, thankfully no one put me in brother's zone ... zone and bro-zoneIt's heartbreaking, man."....
'Ignore the screams... get to the quiet ones': Paramedic tells how he had to steel himself as he entered a foyer full of dead and dying victims, including children, at the Manchester Arena
Edit This is Money 28 May 2017
Nothing in his training could have prepared father-of-three Paddy Ennis (pictured) for the carnage he would witness as he reached the blast zone ... Nothing in his training could have prepared father-of-three Paddy Ennis for the carnage he would witness as he reached the blast zone ... paramedics allowed into the ‘hot zone’ where the bomb was detonated....
YEA Deletes 18,000 Names From Payroll
Edit Peace FM Online 28 May 2017
The National Youth Employment Agency (YEA) says it has deleted about 18, 000 names from its payroll system. This follows some discrepancies found on YEA’s payroll system ... In the Upper East Region we have three terms currently and we are told that, the Bawku zone is completed and that will be followed by the Navrongo zone and the Bolgatanga zone to complete that of Upper East.” ... Mr ... ....
For first time, GHMC staff can be posted outside Hyderabad
Edit Deccan Chronicle 28 May 2017
... “settle” into comfort zones and indulge in graft ... Under the service rules, employees working in the urban local bodies have been grouped into categories that will determine which zone they are transferred into....
Toxic materials pollute Hyderabad nalas
Edit Deccan Chronicle 28 May 2017
Hyderabad ... The toxic waste is from a group of chemical industries, around which a residential zone has been developed. The air quality is highly polluted and even the rainfall of 5cm causes the polluted water to flow from the unfenced nala to the residential zone. Mr ... But no action came ... ....
IMD hints at monsoon onset in Kerala in month-end
Edit The Times of India 28 May 2017
PUNE ... According to the prediction, monsoon's advancement over Kerala seemed imminent with the strengthening of westerlies and northward shift of shear zone — typical of monsoon onset ... The appearance of a shear zone is a typical feature around the time of the onset of monsoon. This zone is likely to appear to the southwest of Kerala and shift further across the state around the time of the onset," a senior IMD official said ... RELATED ... 3000....
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