Cosmology

Science Documentary: Big Bang, Inflation, Multiverse, a Documentary on Cosmology

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Duration: 93:26
Updated: 12 Aug 2015
views: 22230

Watch more: https://goo.gl/3vYy1J ============================ Science Documentary: Big Bang, Inflation, Multiverse, a Documentary on Cosmology The Big Bang happened 13.7 billion years ago, but we do not know what or why it happened. So far we can only speculate, but we do know that the Big Bang gave us all the ingredients that make up our universe. All the energy and matter that exists in our universe was created during the Big Bang. Cosmology is the study of the origin of the universe and the way in which it evolves over time. Since the speed of light is a constant, this helps us to study the universe. When we look at stars and galaxies through a telescope, we can determine their age by measuring the time it takes for their light to reach our eyes. This measurement of time is light years. Studying cosmology has provided us a concise picture of the universe from its origin in the Big Bang all the way up to today. But there are several questions that we have yet been able to answer. The first question asked is whether there was anything before the Big Bang. Did space and time exist prior? Another question is what is Dark matter. Dark matter is abundant in the universe. In fact, there is more Dark matter than regular matter in the universe. Dark matter interacts with gravity but not with light. When scientists observe the expansion of the universe, they observe that the expansion was accelerating. This means that the galaxies were flying away from each other faster and faster. It is believed that the cause of this acceleration is due to Dark Energy. Perhaps the biggest question is whether there is life somewhere else in the universe. Our technology to this point has not allowed us to discover life on other planets, but over the next several decades, scientists believe that this question may be answered. Is our universe part of a multiverse? The standard Big Bang theory suggests that the universe began roughly 13.7 billion years ago from an incredibly hot dense state referred to as a singularity. But Inflationary theory suggests that the Big Bang was not the beginning of existence , but it was our own local Big Bang in a much greater multiverse which already existed. The standard Big Bang theory does not describe what banged or why. It merely describes the aftermath of the bang. This means that the explosion of the Big Bang had already occurred before the theory begins. Inflation is a theory that modifies the Big Bang theory, but is not intended to replace it. Although the Big Bang theory is a truly successful theory; inflation is the "bang" portion of the Big Bang theory. ================= Thanks for Watching Please Like and Subscribe to watch more videos

wn.com/Science Documentary Big Bang, Inflation, Multiverse, A Documentary On Cosmology

Cosmology Lecture 1

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Duration: 95:47
Updated: 29 Jan 2013
views: 143899

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/BWxP/ (January 14, 2013) Leonard Susskind introduces the study of Cosmology and derives the classical physics formulas that describe our expanding universe. Originally presented in the Stanford Continuing Studies Program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford

wn.com/Cosmology Lecture 1

Cosmology | Lecture 1

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Duration: 103:03
Updated: 12 Jun 2009
views: 328596

Lecture 1 of Leonard Susskind's Modern Physics concentrating on Cosmology. Recorded January 13, 2009 at Stanford University. This Stanford Continuing Studies course is the fifth of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topics covered in this course focus on classical mechanics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Stanford University: http://www.stanford.edu Stanford Continuing Studies: http://continuingstudies.stanford.edu/ About Leonard Susskind: http://www.stanford.edu/dept/physics/people/faculty/susskind_leonard.html Stanford University Channel on YouTube: http://www.youtube.com/stanford

wn.com/Cosmology | Lecture 1

Cosmology Lecture 3

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Duration: 101:15
Updated: 05 Feb 2013
views: 30574

(January 28, 2013) Leonard Susskind presents three possible geometries of homogeneous space: flat, spherical, and hyperbolic, and develops the metric for these spatial geometries in spherical coordinates. Originally presented in the Stanford Continuing Studies Program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford

wn.com/Cosmology Lecture 3

Lawrence Krauss - Crisitunities in Cosmology | October 4, 2015

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Duration: 107:44
Updated: 04 Oct 2015
views: 5369

Lawrence Krauss is a Canadian-American theoretical physicist who is a professor of physics, and the author of several bestselling books, including The Physics of Star Trek and A Universe from Nothing. He is an advocate of scientific skepticism, science education, and the science of morality. Krauss is one of the few living physicists referred to by Scientific American as a "public intellectual", and he is the only physicist to have received awards from all three major U.S. physics societies: the American Physical Society, the American Association of Physics Teachers, and the American Institute of Physics. evolution, bill maher, atheist, dawkins, hitchens, neil degrasse tyson, christopher hitchens, dawkins richard, richard dawkins, carl sagan, sam harris, atheism, ravi zacharias, kent hovind, dawkins debate, christopher hitchens debate, richard dawkins debate, lawrence krauss, the atheist experience, lawrence krauss 2015, sam harris 2015, richard dawkins 2015, neil degrasse tyson, neil degrasse tyson 2015, neil degrasse tyson september 2015, neil degrasse tyson october 2015, neil degrasse tyson november 2015, neil degrasse tyson december 2015, neil degrasse tyson 2016, neil degrasse tyson january 2016, neil degrasse tyson february 2016, neil degrasse tyson march 2016, neil degrasse tyson april 2016, neil degrasse tyson may 2016, neil degrasse tyson june 2016, neil degrasse tyson july 2016, neil degrasse tyson august 2016, neil degrasse tyson september 2016, neil degrasse tyson october 2016, neil degrasse tyson november 2016, neil degrasse tyson december 2016, neil degrasse tyson cosmos, neil degrasse tyson cosmos interview, lawrence krauss 2015, sam harris 2015, richard dawkins 2015, lawrence krauss september 2015, sam harris september 2015, richard dawkins september 2015, lawrence krauss october 2015, sam harris october 2015, richard dawkins october 2015, lawrence krauss november 2015, sam harris november 2015, richard dawkins november 2015, lawrence krauss december 2015, sam harris december 2015, richard dawkins december 2015, lawrence krauss 2016, sam harris 2016, richard dawkins 2016, lawrence krauss january 2016, sam harris january 2016, richard dawkins january 2016, lawrence krauss february 2016, sam harris february 2016, richard dawkins february 2016, lawrence krauss march 2016, sam harris march 2016, richard dawkins march 2016, lawrence krauss april 2016, sam harris april 2016, richard dawkins april 2016, lawrence krauss may 2016, sam harris may 2016, richard dawkins may 2016, lawrence krauss june 2016, sam harris june 2016, richard dawkins june 2016, lawrence krauss july 2016, sam harris july 2016, richard dawkins july 2016, lawrence krauss august 2016, sam harris august 2016, richard dawkins august 2016, lawrence krauss september 2016, sam harris september 2016, richard dawkins september 2016, lawrence krauss october 2016, sam harris october 2016, richard dawkins october 2016, lawrence krauss november 2016, sam harris november 2016, richard dawkins november 2016, lawrence krauss december 2016, sam harris december 2016, richard dawkins december 2016, richard dawkins vs, richard dawkins documentary, richard dawkings, richard dawkins god, richard dawkins quotes, christopher hitchens, atheism, Sam Harris debate Sam Harris islam Sam Harris free will Sam Harris waking up Sam Harris meditation Sam Harris bill maher Sam Harris reza aslan Sam Harris joe rogan, Richard Dawkins debate, richard dawkins hate mail, richard dawkins islam, richard dawkins what if you're wrong, richard dawkins thug life, richard dawkins documentary, richard dawkins bill o'reilly, richard dawkins wendy wright, lawrence krauss debate, lawrence krauss 2015, lawrence krauss universe from nothing, lawrence krauss noam chomsky, lawrence krauss william lane craig, lawrence krauss lecture, lawrence krauss interstellar, lawrence krauss richard dawkins, lawrence krauss bill maher, neil degrasse tyson religion, neil degrasse tyson interstellar, neil degrasse tyson most astounding fact, neil degrasse tyson cosmos, neil degrasse tyson debate, neil degrasse tyson interview, neil degrasse tyson bill maher, neil degrasse tyson jon stewart, neil degrasse tyson stephen colbert, neil degrasse tyson colbert report, neil degrasse tyson daily show, neil degrasse tyson star talk, 2016

wn.com/Lawrence Krauss Crisitunities In Cosmology | October 4, 2015

PLASMA COSMOLOGY VS BIG BANG MYTHOLOGY EXPLAINED

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Duration: 107:51
Updated: 13 Jun 2015
views: 31428

these guys are the real deal...they explained about real astronomy and important things happened in the universe billions of years ago by moving further than hypothesis.....this is the only way i can promote these so called alternative science...but for me their explanations are much better than mainstream (standard) science

wn.com/Plasma Cosmology Vs Big Bang Mythology Explained

The Big Bang, Cosmology part 1: Crash Course Astronomy #42

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Duration: 13:23
Updated: 10 Dec 2015
views: 249723

Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the universe began - with a bang. Crash Course Astronomy Poster: http://store.dftba.com/products/crashcourse-astronomy-poster -- Table of Contents Distant Galaxies Show a Red Shift in Their Spectra 2:07 The Universe is Expanding 2:51 This Model is Called “The Big Bang” 5:12 The Universe is Almost 14 Billion Years Old 11:43 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse -- PHOTOS/VIDEOS Hubble Goes to the eXtreme to Assemble Farthest-Ever View of the Universe http://www.nasa.gov/mission_pages/hubble/science/xdf.html [credit: NASA; ESA; G. Illingworth, D. Magee, and P. Oesch, University of California, Santa Cruz; R. Bouwens, Leiden University; and the HUDF09 Team] Out of this whirl: The Whirlpool Galaxy (M51) and companion galaxy http://www.spacetelescope.org/images/heic0506a/ [credit: NASA, ESA, S. Beckwith (STScI), and The Hubble Heritage Team STScI/AURA)] Red-Shifts in the Spectra of Extra-glactic Nebuale http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1936ApJ....83...10H&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf [credit: American Astronomical Society, NASA Astrophysics Data System] Andromeda http://www.nasa.gov/images/content/386910main_M31_optical_wide.jpg [credit: Bill Schoening, Vanessa Harvey/REU program/NOAO/AURA/NSF] The Big Bang (video) http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10128 [credit: NASA] The Sun https://www.nasa.gov/sites/default/files/706436main_20121114-304-193blend_m6-orig_full.jpg [credit: NASA/SDO] Alpha Centauri http://www.eso.org/public/images/eso1241e/ [credit: ESO/Digitized Sky Survey 2, Acknowledgement: Davide De Martin] Andromeda https://en.wikipedia.org/wiki/Andromeda_Galaxy#/media/File:Andromeda_galaxy_2.jpg [credit: NASA/JPL-Caltech] Friedmann Universes https://commons.wikimedia.org/wiki/File:Friedmann_universes.svg Friedmann Equation http://burro.astr.cwru.edu/Academics/Astr328/Notes/Expansion/friedmann.html Penzias and Wilson stand at the 15 meter Holmdel Horn Antenna that brought their most notable discovery. https://en.wikipedia.org/wiki/Arno_Allan_Penzias#/media/File:Horn_Antenna-in_Holmdel,_New_Jersey.jpeg [credit: NASA] Planck CMB http://www.esa.int/spaceinimages/Images/2013/03/Planck_CMB [credit: ESA and the Planck Collaboration] Galaxy Superclusters http://irfu.cea.fr/Projets/coast_documents/images_MareNostrum/SDvision-MN00097-hires-01-mymix-a0_075.jpg [credit: Marenostrum Numerical Cosmology Project]

wn.com/The Big Bang, Cosmology Part 1 Crash Course Astronomy 42

Dark Energy, Cosmology part 2: Crash Course Astronomy #43

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Duration: 11:23
Updated: 17 Dec 2015
views: 223211

The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the Universe will expand forever, even as our view of it shrinks while space expands faster all the time. Crash Course Astronomy Poster: http://store.dftba.com/products/crashcourse-astronomy-poster -- GEOMETRY OF THE UNIVERSE RESOURCES Geometry: http://abyss.uoregon.edu/~js/cosmo/lectures/lec15.html http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question35.html Expanding faster than light: http://curious.astro.cornell.edu/legal-information/104-the-universe/cosmology-and-the-big-bang/expansion-of-the-universe/616-is-the-universe-expanding-faster-than-the-speed-of-light-intermediate General expansion: https://en.wikipedia.org/wiki/Metric_expansion_of_space -- Table of Contents Majority of the Universe is Made of Dark Energy 4:35 Dark Energy Accelerates the Expansion of Space 3:42 We Think The Universe Will Expand Forever 5:20 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse -- PHOTOS/VIDEOS The Big Bang http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10128 [credit: NASA] Collision Scenario for Milky Way and Andromeda Galaxy Encounter http://www.nasa.gov/images/content/654284main_i1220bw.jpg [credit: NASA; ESA; A. Feild and R. van der Marel, STScI] Artist's impression of vampire star http://www.spacetelescope.org/videos/astro_bn/ [credit: ESO/M. Kornmesser] Host Galaxies of Distant Supernovae http://www.nasa.gov/sites/default/files/images/593872main_hs-2006-52-a-print.jpg [credit: NASA, ESA, and A. Riess (STScl)] Dark Energy Expands the Universe http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10135 [credit: NASA] Expanding Universe http://www.spacetelescope.org/videos/hst15_expanding_universe/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)] Hubble Ultra Deep Field 2014 http://hubblesite.org/newscenter/archive/releases/2014/27/image/a/ [credit: NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)]

wn.com/Dark Energy, Cosmology Part 2 Crash Course Astronomy 43

Cosmology: the physical edges of the Universe - Edges of Astronomy 2014

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Duration: 85:27
Updated: 18 Dec 2014
views: 26417

This session will be an exploration of the edges of the Universe, and the edges of knowledge. There are things that we cannot in principle observe. Are there things we cannot in principle know? Which is the most fundamental limit: the small and large edges of space, the edges of time, the edges of knowledge, or something else? Chair Associate Professor Tamara Davis The University of Queensland Mentor Professor Brian Schmidt AC FAA FRS The Australian National University The edge of the Universe—a fundamental limit how much we can know? - Associate Professor Tamara Davis The small-scale spatial limits to the Universe - Dr Alessandro Fedrizzi The edge of time: What happened at the big bang? - Dr Luke Barnes The edges of knowledge —the ‘physics is done’ syndrome - Associate Professor Michael Murphy

wn.com/Cosmology The Physical Edges Of The Universe Edges Of Astronomy 2014

Cosmology in the 21st Century: PI Public Lecture by Dr. Kendrick Smith

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Duration: 71:37
Updated: 06 Feb 2015
views: 22831

Cosmologist Kendrick Smith gives a guided tour through the expanding universe, from the big bang to our present-day understanding of dark matter and other cosmic phenomena, during his Feb. 4, 2015 public lecture at Perimeter Institute. Hit the subscribe button to see more PI lectures, interviews, animations, and more. Find out about upcoming Perimeter Institute Public Lectures: http://www.perimeterinstitute.ca/outreach/general-public/public-lecture-series Join the conversation: www.twitter.com/perimeter www.facebook.com/pi_outreach

wn.com/Cosmology In The 21St Century Pi Public Lecture By Dr. Kendrick Smith

Cosmology: A Religion For Atheists? | William Lane Craig critiques "The Theory Of Everything" movie

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Duration: 83:11
Updated: 04 Dec 2015
views: 9741

For more resources visit: http://www.reasonablefaith.org In the film The Theory Of Everything, Stephen Hawking (portrayed by Eddie Redmayne) claims that cosmology is "a religion for intelligent atheists". The question haunts the film as it haunts Hawking's books. Dr William Lane Craig examines this claim - critiquing both dialogue from the film, and Prof. Hawking's own publications. Does a beginning to the universe entail a creator? Does Hawking's latest "no boundary" Big Bang model eliminate the need for God? What hope is there, in a Godless universe? And is philosophy "dead" as Stephen Hawking claims? Dr William Lane Craig's Kalam Cosmological Argument is the most widely discussed argument for the existence of God in contemporary western philosophy. He is Research Professor of Philosophy at Talbot School of Theology and Houston Baptist University. He's published over 40 books and over 150 articles in peer-reviewed journals. He is most known online for his lectures and debates with leading atheists and skeptics. This lecture was delivered at Highfield Church, Southampton, in the UK. Still images from The Theory Of Everything (Universal Studios and Focus Features) have been included under and constitute Fair use for Academic Purposes. We welcome your comments in the Reasonable Faith forums: http://www.reasonablefaith.org/forums/ Be sure to also visit Reasonable Faith's other channel which contains short clips: http://www.youtube.com/drcraigvideos Follow Reasonable Faith On Twitter: http://twitter.com/rfupdates Like the Reasonable Faith Facebook Fan Page: https://www.facebook.com/reasonablefaithorg

wn.com/Cosmology A Religion For Atheists | William Lane Craig Critiques The Theory Of Everything Movie

Cosmology | The Dark Side Of The Universe - Full documentaryHD

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Duration: 57:23
Updated: 10 May 2015
views: 11470

--- ABDH Media - Space --- The dark side of the universe AT FIVE tonnes and 520 megapixels, it is the biggest digital camera ever built—which is fitting, because it is designed to tackle the biggest problem in the universe. On February 20th researchers at the Cerro Tololo Inter-American Observatory (pictured), which sits 2,200 metres (7,200 feet) above sea level in the Atacama desert of northern Chile, will begin installing this behemoth on a telescope called Blanco. It is the centrepiece of the Dark Energy Survey (DES), the most ambitious attempt yet to understand a mystery as perplexing as any that faces physics: what is driving the universe to expand at an ever greater rate. Read More: http://www.economist.com/node/21547760 *Subscribe for more Educative & Space Documentaries (Like & Share) * Visit our website: http://www.advexon.com * ABDH Media Documentaries: https://www.youtube.com/channel/UCHx69kZbXbX6WgMq_njRvFA *NOVA | PBS Documentaries (HD): https://www.youtube.com/channel/UCYMWnCecPvpQJj8sBPUi4bA #ABDH #space #spacedocumentary #AlienPlanets #NEWFullScienceDocumentaries #SpaceDocumentary2015 #alien #spacedocumentarynationalgeographic #spacedocumentaryhd #spacedocumentarybbc #spacedocumentary2015hd #spacedocumentaryplaylist #spacedocumentarynationalgeographic2015 #spacedocumentaryblackholes #spacedocumentaryforkids #spacedocumentaryalienplanets #spacedocumentaryasteroidthedoomsdayrock #spacedocumentary2015aliens #aspaceodysseydocumentary #spacedocumentaryblackholesfdc #spacedocumentarybriancox #spacedocumentarybest #spacedocumentarybbc2015 #spacedocumentaryblacksky #spacedocumentarybigbang #bestspacedocumentary2015 #spacedocumentarycosmos #spacedocumentaryconspiracy #spacedocumentarychannel #spacedocumentarychildren #discoverychanneldocumentaryspace #spacecolonizationdocumentary #spaceshuttlechallengerdocumentary #spacetimecontinuumdocumentary #historychanneldocumentaryspace #spacedocumentarydiscoverychannel #spacedocumentarydarkmatter #spacedocumentarydiscovery #deepspacedocumentary #deepspacedocumentary2015 #spacedisastersdocumentary #spacedivedocumentary #spaceshuttledisasterdocumentary #davidattenboroughspacedocumentary #spaceelevatordocumentary #spaceexplorationdocumentary2015 #earthfromspacedocumentary #spaceexplorationdocumentary2015 #spaceengineeringdocumentary #edgeofspacedocumentary #emptyspacedocumentary #spacedocumentaryforchildren #spacedocumentaryfilms #spacedocumentaryfull #spacedocumentaryfulllength #spacedocumentaryfuture #spacedocumentaryfunny #2015spacedocumentaryfull #spacedocumentarygalaxies #spacedocumentarygravity #spaceuniversegalaxydocumentary #spacedocumentarynationalgeographic2015 #spacetraveldocumentarynationalgeographic #spacedocumentarynationalgeographichd #spacedocumentaryhd2015 #spacedocumentaryhd1080p #spacedocumentaryinhd

wn.com/Cosmology | The Dark Side Of The Universe Full Documentaryhd

1. Inflationary Cosmology: Is Our Universe Part of a Multiverse? Part I

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Duration: 70:23
Updated: 01 Jul 2014
views: 66468

MIT 8.286 The Early Universe, Fall 2013 View the complete course: http://ocw.mit.edu/8-286F13 Instructor: Alan Guth In this lecture, the professor talked about the standard Big Bang, cosmic inflation, evidence for inflation, Cosmic Microwave Background (CMB), universe to multiverse, dark energy, etc. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu

wn.com/1. Inflationary Cosmology Is Our Universe Part Of A Multiverse Part I

Crisitunities in Cosmology — Professor Lawrence Krauss, ISS2015

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Duration: 110:02
Updated: 02 Sep 2015
views: 47767

Our understanding of the cosmos has improved immensely in the last century ... yet, embarrassingly, 96% of the stuff of the universe remains unexplained. Between the mysteries of Dark Matter and Dark Energy, we've still got loads left to work out. Which is a good thing for scientists. Professor Lawrence Krauss, Foundation Professor of the School of Earth and Space Exploration at Arizona State University and director of its Origins Project, speaking to students at the 38th Professor Harry Messel International Science School, ISS2015: BIG — The University of Sydney, Australia, July 2015 Lawrence's second talk at ISS2015: https://youtu.be/wMI-ot-n-aw The entire ISS2015 playlist: https://www.youtube.com/playlist?list=PLINIad1nw-HIx7WDSTf0dKXXB4kpCcMYG featuring: Exploring the Milky Way with Naomi McClure-Griffiths: https://youtu.be/NVAz6dcSK0M Space Exploration and the International Space Station, with NASA astronaut Greg Chamitoff: https://www.youtube.com/watch?v=6M0FBLnlo8k Quantum Weirdness with David Reilly: https://www.youtube.com/watch?v=IHKGUCcLz_U Dark Matter & the Large Hadron Collider with Martin White: https://www.youtube.com/watch?v=uhwuU9l10PM For more about the ISS: http://sydney.edu.au/science/iss Lawrence's web page: http://krauss.faculty.asu.edu

wn.com/Crisitunities In Cosmology — Professor Lawrence Krauss, Iss2015

Cosmology 2015: from quantum foam to the cosmic web - Francois R. Bouchet

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Duration: 48:29
Updated: 01 Jul 2015
views: 5606

https://strings2015.icts.res.in/talkTitles.php

wn.com/Cosmology 2015 From Quantum Foam To The Cosmic Web Francois R. Bouchet

Cosmology and the arrow of time: Sean Carroll at TEDxCaltech

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Duration: 16:06
Updated: 25 Feb 2011
views: 107204

Sean Carroll is a theoretical physicist at Caltech. He received his Ph.D. in 1993 from Harvard University, and has previously worked at MIT, the Institute for Theoretical Physics at the University of California, Santa Barbara, and the University of Chicago. His research ranges over a number of topics in theoretical physics, focusing on cosmology, particle physics, and general relativity, with special emphasis on dark matter, dark energy, and the origin of the universe. He is the author of "From Eternity to Here," a popular book on cosmology and the arrow of time, and of "Spacetime and Geometry," a textbook on general relativity; has produced a set of introductory lectures for The Teaching Company entitled "Dark Matter and Dark Energy: The Dark Side of the Universe;" and is a co-founder of the popular science blog Cosmic Variance, http://blogs.discovermagazine.com/cosmicvariance/. About TEDx, x = independently organized event: In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized. (Subject to certain rules and regulations.) On January 14, 2011, Caltech hosted TEDxCaltech, an exciting one-day event to honor Richard Feynman, Nobel Laureate, Caltech physics professor, iconoclast, visionary, and all-around "curious character." Visit TEDxCaltech.com for more details.

wn.com/Cosmology And The Arrow Of Time Sean Carroll At Tedxcaltech

Physics@FOM 2015, Alan Guth - Inflationary Cosmology: Is Our Universe Part of a Multiverse?

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Duration: 64:51
Updated: 28 Jan 2015
views: 22208

Alan Guth's lecture starts at 13.20 Inflationary Cosmology: Is Our Universe Part of a Multiverse? Inflationary cosmology gives a very plausible explanation for many features of our universe, including its uniformity, its mass density, and the patterns of the ripples that are observed in the cosmic microwave background. Most versions of inflation, however, imply that our universe is not unique, but is part of a possibly infinite multiverse. Guth talks about how inflation works, and why he believes that the possibility of a multiverse should be taken seriously. About the conference: Physics@FOM Veldhoven is a large congress that provides a topical overview of physics in the Netherlands. It is organised by the Foundation for Fundamental Research on Matter (FOM) and takes place each year in January. Traditionally, young researchers are given the chance to present themselves and their work alongside renowned names from the Dutch and international physics community. The programme covers Light and matter, Atomic, molecular and optical physics, Nanoscience and nanotechnology, Statistical physics and Soft condensed matter, Surfaces and interfaces, Physics of fluids, Subatomic physics, Plasma and fusion physics, and Strongly correlated systems. http://www.fom.nl/veldhoven

wn.com/Physics Fom 2015, Alan Guth Inflationary Cosmology Is Our Universe Part Of A Multiverse

PLASMA COSMOLOGY = REAL SCIENCE UNIVERSITIES SHOULD TEACH

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Duration: 63:48
Updated: 06 Apr 2015
views: 25958

these guys are the real deal...they explained about real astronomy and important things happened on earth thousands of years ago...this is the only way i can promote these so called alternative science...but for me their explanations are better than mainstream (standard) science

wn.com/Plasma Cosmology Real Science Universities Should Teach

George F.R. Ellis, On the Nature of Cosmology Today (2012 Copernicus Center Lecture)

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Duration: 104:33
Updated: 28 Jan 2013
views: 18800

Cosmology is today a precision science with masses of high quality data every increasing our understanding of the physical universe, but paradoxically theoretical cosmology is simultaneously increasingly proposing theories based on ever more hypothetical physics, or concepts that are untestable even in principle (such as the multiverse). We are also seeing ever more dogmatic claims about how scientific cosmology can solve philosophical problems that have been with us for millenia. This talk comments in these trends, carefully distinguishing what is and what is not testable in scientific cosmology, and relating this solid scientific background to some of the recent philosophical claims made about how scientific cosmology relates to issues of meaning. The fourth Copernicus Center Lecture - "On the Nature of Cosmology Today" - was delivered by Professor George Ellis, a famous cosmologist, mathematician, philosopher of science as well as researcher of the relationship between science and religion, currently Emeritus Distinguished Professor of Complex Systems in the Department of Mathematics at the University of Cape Town in South Africa. The 2012 Copernicus Center Lecture was part of the 16th Kraków Methodological Conference - "The Causal Universe", which was co-organized by the Copenicus Center for Interdisciplinary Studies. Conference website: http://causal-universe.philosophyinscience.com Photos of the conference:http://adamwalanus.pl/2012/cc120517.html Organizers' comment: To date, the natural sciences provide extremely detailed description of how Universe functions by providing a set of scientific laws. These laws reflect regularities in nature and allow for the explanation and prediction of the observed phenomena. What seems to escape the power of contemporary science entirely, however, is the answer to the question of why the Universe is. Such an inquiry demands the use of a fundamental philosophical category of causality. Inasmuch as the "how" causality is associated with the determinism of scientific laws, the "why" causality reaches beyond the scientific discourse. In other words, one wishes to know why the Universe is and why it is as it is. The conference offers a unique opportunity to broaden our understanding of how to combine our vast knowledge of the laws governing the Universe in the quest for the ultimate explanation of its existence and specificity. As George Ellis states in his famous article On the Nature of Causation in Complex Systems, the problem of causality may be found not only in the field of philosophy but also in physics and other empirical sciences: The nature of causation is a core issue for science, which can be regarded as the move from a demon-centered world to a world based on reliable cause and effect, tested by experimental verification. (...) Physics is the basic science, characterized by mathematical descriptions that allow predictions of physical behavior to astonishing accuracy and underlies the other sciences. The key question is whether other forms of causation such as those investigated in biology, psychology, and the social sciences are genuinely effective, or are they rather all epiphenomena grounded in purely physical causation? (...) I will claim here that there are indeed other types of causation at work in the real world, described quite well by Aristotle's four types of causes. There are of course many contexts in which different kinds of causality are experienced: in physics and chemistry, where particles and forces interact in a way described by variational principles and symmetries; in biochemistry and cell biology, where information is important and adaptation takes place; in zoology, where purpose, planning, and anticipation are important; and in psychology and sociology, where analytic reflection, symbolic understanding, values and meaning all are causally effective.

wn.com/George F.R. Ellis, On The Nature Of Cosmology Today (2012 Copernicus Center Lecture)

Philosophy of Cosmology

Order: Reorder
Duration: 48:47
Updated: 06 Mar 2015
views: 10914

wn.com/Philosophy Of Cosmology

Before the big bang 2 - Conformal Cyclic Cosmology explained

Order: Reorder
Duration: 39:05
Updated: 24 Jan 2014
views: 44268

The conventional view that time began at the big bang is often said to be based on what is known as Penrose Hawking singularity theorems. In our last film, Abhay Ashtekar and Ivan Agullo argued that a singularity is replaced with a bounce in quantum gravity. In this film, we interview Sir Roger Penrose, one of the authors of the conventional narrative who presents an alternative view which he calls CCC (Conformal Cyclic Cosmology). In CCC the big bang is not the ultimate beginning but it did not arise from a bounce; instead the universe rescales itself, losing track of how big it is as massive particles disappear (and hence the ability to measure space and time) in the remote future. This cyclic behaviour may be extended to the infinite past and future. Whilst Roger Penrose and Vahe Gurzadyan's claim that there was evidence for CCC in the CMB (Cosmic Microwave Background) was not accepted by the wider community, what's less well known is that a new team led by Prof Krzysztof Meissner (University of Warsaw, CERN) has claimed a confirmation of CCC in a new study. We discuss this with Professors Penrose and Meissner and put to them many questions regarding this new model. The film is intended for a lay audience that has an interest in cosmology and the origin of the big bang. The interviewees were asked to check a draft of the film to make sure they had not been taken out of context in the edit and there are no scientific mistakes. Animation credits: Big bang/expanding universe animation: Alex Bennett Colliding galaxies: NASA For more material read Roger Penrose' book Cycles of Time: amazon.co.uk/Cycles-Time-Extraordinary-View-Universe/dp/0099505940 Technical paper on CCC from the Journal of Physics: iopscience.iop.org/1742-6596/229/1/012013 Paper claiming circles in the CMB: link.springer.com/article/10.1140%2Fepjp%2Fi2013-13022-4 Paper denying circles in the CMB: arxiv.org/abs/1012.1305 Meissner's paper claiming confirmation of circles: arxiv.org/pdf/1307.5737.pdf Ted Newman's paper on CCC: arxiv.org/abs/1012.1305 Sean Carroll's article on CCC and debating William Lane Craig: preposterousuniverse.com/blog/2010/12/07/penroses-cyclic-cosmology/ preposterousuniverse.com/blog/2012/09/25/let-the-universe-be-the-universe/ William Lane Craig podcast on CCC: reasonablefaith.org/truth-free-will-and-cosmology Music is by Sigur Ros and is used with permission. For permission , see this link:http://www.sigur-ros.co.uk/band/faq.php#13

wn.com/Before The Big Bang 2 Conformal Cyclic Cosmology Explained

Lawrence Krauss CERN Cosmology Lecture - Inflation to Eternity

Order: Reorder
Duration: 70:01
Updated: 21 Sep 2014
views: 26932

Lecture given by Professor Lawrence M. Krauss at the CERN Colloquium on Cosmological Physics. The last decade or two have represented the golden age of observational cosmology, producing a revolution in our picture of the Universe on its largest scales, and perhaps also its smallest ones. In this lecture, Prof. Krauss will argue that these recent development bring to the forefront some vexing questions about whether various fundamental assumptions about the universe are in fact falsifiable. In this he will focus on 3 issues: (1) "Proving" Inflation, (2) Dark Energy and Anthropic Arguments, and (3) Cosmology of the far future. In 2014, the potential "smoking gun" for inflation was thought to have been found with the following experimental techniques https://www.youtube.com/watch?v=QCbk4afiF1c, Super-sensitive, superconducting microwave detectors, built at NIST, and implemented at BICEP and Keck telescope arrays at the South Pole have allowed astrophysicists to find out some of the answers with new observational results. The Background Imaging of Cosmic Extragalactic Polarization (BICEP) results are indirect evidence for the existence of the elusive gravitational waves from the big bang itself. By using highly sensitive microwave detectors, developed at the National Institute of Standards and Technology (NIST), telescope cameras can detect the polarization direction of photons emitted from the moment of last scattering between the photons and electrons in the plasma of the early universe, before stars and galaxies could form. These photons make up the CMB Radiation, which radiated outward after electromagnetic radiation decoupled itself from the plasma state of matter in the early universe, as the plasma formed into a gas, making space transparent for the first time. The photons emitted at the moment of last scattering, 13.7 Billion years ago, were gamma ray photons. Since then, they have been travelling almost uniformly, in every direction across the universe. Since the universe is expanding, these photons have stretched with the fabric of spacetime as the universe expanded and this has stretched their wavelength from gamma rays to microwaves. The apparently uniform pattern of polarization in the CMB can be broken into two components. One, a curl-free, gradient-only component, the E-mode (named in analogy to electrostatic fields). The second component is divergence-free, curl only, and is known as the B-mode (named in analogy to magnetic fields). Cosmologists predict two types of B-modes, the first generated during cosmic inflation shortly after the big bang, and the second generated by gravitational lensing at later times. Now, the BICEP team has confirmed detection of the first type of B-modes, consistent with inflation and gravitational waves in the early universe However, there are now grave doubts over the validity of the results. The BICEP2 team underestimated how much dust in our own galaxy can polarize microwave radiation, which was tested with ESA's Planck Mission that observed these effects and compensated for them. In order to salvage any hope of a discovery claim they will have to take more data from BICEP2 and Planck, compensate for the effects of space dust, and then publish the paper before making any announcement as it is a big claim to make, to be sure whether they had in fact seen the first signs of gravitational waves from the Big Bang, or were fooled by the effects of intergalactic space dust. Either way the results were announced too early and without proper scrutiny. The results may yet be salvaged when the results are compensated for the intergalactic dust or they may have to go back to the drawing board and wait for a new series of experiments, including an orbiting satellite for observing B-mode polarization from the CMB. Either way, we are making progress as we now have a real opportunity to answer observational questions that would not have even been asked a decade ago.

wn.com/Lawrence Krauss Cern Cosmology Lecture Inflation To Eternity

Cosmology - Is the universe expanding faster than the speed of light?

Order: Reorder
Duration: 52:05
Updated: 30 Nov 2015
views: 9162

The Universe did not expand faster than light. The Universe was big enough 12 billion years ago that the light from some distant objects is only getting to us now. That doesn't mean that the Universe was more than 12 billion light years wide 12 billion years ago. Because we're moving away from the object, the light has had to catch up to us.

wn.com/Cosmology Is The Universe Expanding Faster Than The Speed Of Light

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