- published: 08 Mar 2011
- views: 16226698
Asteroids are minor planets, especially those of the inner Solar System. The larger ones have also been called planetoids. These terms have historically been applied to any astronomical object orbiting the Sun that did not show the disc of a planet and was not observed to have the characteristics of an active comet. As minor planets in the outer Solar System were discovered and found to have volatile-based surfaces that resemble those of comets, they were often distinguished from asteroids of the asteroid belt. In this article, the term "asteroid" refers to the minor planets of the inner Solar System including those in co-orbit with Jupiter.
There are millions of asteroids, many thought to be the shattered remnants of planetesimals, bodies within the young Sun's solar nebula that never grew large enough to become planets. The large majority of known asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter, or are co-orbital with Jupiter (the Jupiter trojans). However, other orbital families exist with significant populations, including the near-Earth asteroids. Individual asteroids are classified by their characteristic spectra, with the majority falling into three main groups: C-type, M-type, and S-type. These were named after and are generally identified with carbon-rich, metallic, and silicate (stony) compositions, respectively.
Earth /ˈɜːrθ/ (also the world, in Greek: Γαῖα Gaia, or in Latin: Terra) is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.
According to evidence from radiometric dating and other sources, Earth was formed about 4.54 billion years ago. Earth gravitationally interacts with other objects in space, especially the Sun and the Moon. During one orbit around the Sun, Earth rotates about its own axis 366.26 times, creating 365.26 solar days or one sidereal year. Earth's axis of rotation is tilted 23.4° away from the perpendicular of its orbital plane, producing seasonal variations on the planet's surface with a period of one tropical year (365.24 solar days). The Moon is Earth's only permanent natural satellite. Its gravitational interaction with Earth causes ocean tides, stabilizes the orientation of Earth's rotational axis, and gradually slows Earth's rotational rate.
An impact event is a collision between celestial objects causing measurable effects. Impact events have physical consequences and have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal impact. When large objects impact terrestrial planets like the Earth, there can be significant physical and biospheric consequences, though atmospheres mitigate many surface impacts through atmospheric entry. Impact craters and structures are dominant landforms on many of the Solar System's solid objects and present the strongest empirical evidence for their frequency and scale.
Impact events appear to have played a significant role in the evolution of the Solar System since its formation. Major impact events have significantly shaped Earth's history, have been implicated in the formation of the Earth–Moon system, the evolutionary history of life, the origin of water on Earth and several mass extinctions. Notable impact events include the Chicxulub impact, 66 million years ago, believed to be the cause of the Cretaceous–Paleogene extinction event.
Discovery Channel (formerly The Discovery Channel from 1985 to 1995, and often referred to as simply "Discovery") is an American basic cable and satellite television channel (which is also delivered via IPTV, terrestrial television and internet television in other parts of the world) that is the flagship television property of Discovery Communications, a publicly traded company run by CEO David Zaslav. As of June 2012, Discovery Channel is the third most widely distributed cable channel in the United States, behind TBS and The Weather Channel; it is available in 409 million households worldwide, through its U.S. flagship channel and its various owned or licensed television channels internationally.
It initially provided documentary television programming focused primarily on popular science, technology, and history, but in recent years has expanded into reality television and pseudo-scientific entertainment. Programming on the flagship Discovery Channel in the U.S. is primarily focused on reality television series, such as speculative investigation (with shows such as MythBusters, Unsolved History, and Best Evidence), automobiles, and occupations (such as Dirty Jobs and Deadliest Catch); it also features documentaries specifically aimed at families and younger audiences.
Actors: Chad Mathis (miscellaneous crew), Sam Riegel (actor), Matt Walsh (actor), Matt Besser (writer), Casey Wilson (actress), Matt Besser (director), Ian Roberts (actor), Tim Meadows (actor), Horatio Sanz (actor), Amy Poehler (actress), Drew Droege (actor), Matt Besser (actor), Angela Trimbur (actress), Andrew Daly (actor), Neil Mahoney (director),
Genres: Comedy, Musical,Actors: Frankie Faison (actor), Vincent Spano (actor), Steven Randazzo (actor), Bill Raymond (actor), John Sayles (actor), Tony Lo Bianco (actor), Josh Mostel (actor), Mason Daring (actor), Tony Denison (actor), Joe Morton (actor), Jude Ciccolella (actor), Joe Grifasi (actor), Chris Cooper (actor), Lawrence Tierney (actor), David Strathairn (actor),
Plot: City of Hope is a portrait of a typical middle-sized American city of the present day. The crux of the story is an old apartment block which stands in the way of a major commercial development. Joe Rinaldi is the building contractor who owns the buildings, and is being pressured to torch them to permit the development to occur. His estranged son, Nick, soon becomes a pawn in the power politics of the city. Corrupt Mayor Baci and policeman O'Brien are determined to push the development, while idealistic city councilman Wynn soon finds himself torn between what he knows is right and what his black constituents want.
Keywords: african-american, arson, broken-windshield, burglary, construction-company, father-son-relationship, fictional-city, homophobia, independent-film, italian-american● Discovery Channel - Large Asteroid Impact Simulation (2008). Earth was born as a result of repeated asteroid collisions, the moon was created by a single giant impact event. Then, Earth's size attracted huge meteorites, which slammed into it, causing super-high-temperature rock vapour to cover the entire surface and evaporate all ocean water. The earliest life-forms survived such infernal events by escaping deep into the ground, miraculously emerging again and again. The Earth has gone through innumerable catastrophic events, and life has survived by acquiring new abilities to live through each crisis. Humans are part of the grand history of life's evolution, which has been closely intertwined with repeated cataclysmic events. Learn what would happen if an asteroid hit the Earth with t...
This program repeatedly hammers home the catastrophic impact of a large asteroid impact on earth. Several known large impacts of the past are recounted as well as some recent near hits. Recent and planned missions to explore objects in the asteroid belt are reviewed.
What I know about the info circulating the web about potential asteroid strikes this week. Our Website http://www.BPEarthWatch.Com https://www.youtube.com/watch?v=2w07Y8LbjEk http://www.huffingtonpost.com/entry/nasa-planetary-defense-office_us_5693359de4b0a2b6fb70aaee
In the clip from Last Days of the Dinosaur we learn how the asteroids really killed the dinosaurs... For more information on Asteroid Day please visit: www.yourdiscoveryscience.com Subscribe: youtube.com/user/yourdiscoveryscience?sub_confirmation=1 Like us: Facebook.com/yourdiscoveryscience
Quand la terre est menacée par un astéroïde, les rappeurs rentrent dans le game pour sauver l'humanité. Avec : Mister V, Jérome Niel, Kemar, Alison Wheeler, Carlito, Sophie-Marie Larrouy, David Salles et Timothée Hochet Making-of : bientôt ! Sketch extrait du Tour du Bagel - L’Espace Retrouve tous les sketchs du Tour du Bagel sur http://bit.ly/chainestudiobagel Suis-nous sur Facebook : http://www.facebook.com/studiobagel Sur Twitter : http://www.twitter.com/studiobagel Une idée de Robinson Latour Écrit par Flober Directeur d'Écriture : Robinson Latour Musique originale : Gérard Baste, Djar One et Théodore Bonnet Réalisé par Théodore Bonnet Showrunner : Axel Maliverney Assistante réalisateur : Yasmina Chambenoit Chef opérateur : Antoine Carpentier Régisseur général : Roland Berthemy...
Originally given a 1 in 37 chance to hit Earth, the near Earth object Apophis caused a bit of a panic in late 2004 with a high probability to hit Earth in 2029 or 2036. But what would happen if such a massive object collided with mother Earth? Don't even bother comparing it to a nuclear bomb because it's way beyond that. More reading below. NEXT: What if the biggest asteroid/dwarf planet in our Solar System hit Earth? https://www.youtube.com/watch?v=INgS1mgbxhk Close Call. After its discovery in 2004, astronomers gave the asteroid Apophis a 2.4 percent chance of hitting the earth during its close flyby on April 13, 2029. If the 1,066-foot (325 meters) asteroid were to strike our planet, the blast could equal hundreds of megatons. Fortunately, further analysis showed that Apophis will m...
Nibiru Countdown news channel synthesis planet Nibiru around the world updated daily Please subscribe to channels like channel to share the latest video update Thank you for your interest channel tracking NIBIRU COUNTDOWN 72 HOUR WARNING DEEP IMPACT ASTEROID DUE TO ROCK THE WORLD UPDATE 27TH DEC 2016
Could we stop an asteroid on a collision course for Earth? Subscribe! It's FREE: http://bit.ly/10kWnZ7 Bill Nye Twitter: http://bit.ly/14DOBKA AsapSCIENCE Twitter: http://bit.ly/16mYsWW AsapSCIENCE Facebook: http://on.fb.me/12fEcFg The Planetary Society: http://planetary.org @exploreplanets Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz).
PHOENIX - NASA believes the fireball which lit the pre-dawn sky over Phoenix was a small asteroid burning up in Earth's atmosphere. In a news release, the space agency wrote: "Based on numerous eyewitness accounts, a small asteroid estimated at 10 feet (3 meters) in diameter – with a mass in the tens of tons and a kinetic energy of approximately 10 kilotons – entered Earth’s atmosphere above Arizona just before 4 a.m. local (MST) time. NASA estimates that the asteroid was moving at about 40,200 miles per hour (64,700 kilometers per hour)." VIDEO: Dash camera footage-Security Camera Footage http://www.ksdk.com/news/nation-now/nasa-fireball-was-likely-10-foot-asteroid/228281158 http://www.abc15.com/news/region-phoenix-metro/central-phoenix/what-was-that-bright-light-streaks-across-sky
This is a short clip of scenes which depict scenarios of the happenings that might take place on April 13, 2036. The asteroid will come very close to the Earth in 2029, but miss. That close encounter will trigger a collision in 2036.
Floating in time and emptiness
waiting for the loss of empty hands
coursing, rewind eternity
in the universe's eyes I see
the lines will be us
the space is the loss
awoken by chance
led by our sense
the stars are the way
the suns are the prey
to feed every life
Floating in time and emptiness
waiting for the loss of empty hands
coursing, rewind eternity
in the universe's eyes I see
a movement circular
an extended moment
a lesser piece of forever
in and through the vast
the cycle of the day
shifts the heat away
slowly leads the sun to decay
to the end
of existence