The Big Bang, Cosmology part 1: Crash Course Astronomy #42
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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]
Comments
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I still don't understand how space is expanding between galxies even though he said the galaxies aren't moving. Can someone explain that?
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George lemaitre means george TheMaster, I think he wins the name contest
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You say that all galaxies are moving away from us (redshift), but in a previous video you stated that the Andromeda galaxy is in fact moving towards us (blueshift) and will collide with our galaxy?
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Meanwhile in the creationist viewpoint....
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Can you please make a video on multiverse ???
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If the universe is expanding and we see galaxies moving away from us, this means that matter is clearly not expanding in scale with space-time, otherwise there would be no change in the perceived distance of galaxies. I find it odd that matter wouldn't expand along with space-time since it's "inside" of it.
Can someone explain this? -
so, is the topology of the universe in 4 or more dimensions?
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Does space expand at a constant rate?
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when you love physics and seungri at the same time
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Hi. Sorry...i m new at this and so my question might appear a bit naive but, when Phil says that there is no centre to the universe...i can understand it as long as you are standing somewhere in the middle....where where ever you look there are things ti look at....what happens if you are at the very edge?
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why the hell would anyone have a expandable ruler.
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I want to discuss some stuff on what this video says, especially who discovered the evidence for the Big Bang theory and when.
Right now (as of early November of 2016) I NEED to focus on college work that I am falling behind in! I also have some issues with how the Internet connection works at my home. I will get back to this video later on, which is why I am going to favorite this video.
I am also doing favorite this video because it is very interesting and awesome! -
A black hole creates a hole new universe. The singularity in its center is the starting point. Each universe creates trillions of new ones. The accurate model is the one we see in biology. And universes have evolved from simpler forms to the ones existing today. Reality is way more mindcrushing than we ever can imagine.
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Insane
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1927 expansion theory of universe made by Georges Lemaitre ( belgian priest and contemporary of Einstein) which replaced the steady state model in the 1960's. I bring this up as the film mentions DARWIN the famous astronomer. ? FKINTITS.
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and people are complaining about gay people.
why. -
so what happens when space between galaxies expand to the maximum point? Does it rebound back or tear space time?
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Thank you very much, Phil Plait and the others at Crash Course Astronomy, for making this video! I have to admit that I already knew most of this from before but one thing I learned was that the expansion of the Universe happened in the shape of a huge American football. I also learned the names of who came up with this idea. I have previously heard scientists like Johannes Kepler, Albert Einstein and Stephan Hawking being credited with coming up with this model, the Big Bang model, but I had never heard Vesto Slipher and George Lemaître before. Thank you very much!
I do have a question though: how did Stephen Hawking contribute to the model of the Big Bang? I have seen his documentary on the topic (‘A Brief History of Everything’) and in that, he kind of clams to have done something important for the Big Bang model. What did he do? Did he figure out the rate of the expansion?
Also, I am a lit disappointed there was no what so ever reference to the TV-show ‘The Big Bang Theory’! I love that show, especially Sheldon Cooper... -
OH MY GOSH I FOUND PROOF OF THE FLYING SPAGHETTI MONSTER!!!!
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11:21 er, excuse me? .. my house!
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