A Brief History of the Universe: Crash Course Astronomy #44
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Thanks to the wonders of physics, astronomers can map a timeline of the universe’s history. Today, Phil’s going to give you an overview of those first few minutes (yes, MINUTES) of the universe’s life. It started with a Big Bang, when the Universe was incredibly dense and hot. It expanded and cooled, going through multiple stages where different kinds of matter could form. It underwent a phenomenally rapid expansion called inflation, which smoothed out much of the lumpiness in the matter. Normal matter formed atoms between 3 and 20 minutes after the bang, and the lumps left over from inflation formed the galaxies and larger structures we see today. Crash Course Astronomy Poster: http://store.dftba.com/products/crashcourse-astronomy-poster -- Table of Contents Mapping the History of the Universe Using Math and Observations 00:41 It Started With A Bang! 1:58 Rapid Expansion Smoothed Out Matter 4:55 Normal Matter Formed After 3-20 Minutes 5:12 -- 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 Proton Collision Event with Boosters and LHC https://www.youtube.com/watch?v=NhXMXiXOWAA [credit: ATLAS] Melting Snowball video courtesy of Phil Plait Big Bang to Hubble http://www.spacetelescope.org/videos/hst15_big_bang_to_hubble/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)] Journey to the centre of the Sun http://www.spacetelescope.org/videos/astro_ac/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)] PIA16873: Best Map Ever of the Universe http://photojournal.jpl.nasa.gov/catalog/PIA16873 [credit: ESA and the Planck Collaboration] A high resolution foreground cleaned CMB map from WMAP http://space.mit.edu/home/tegmark/mapforegs.pdf [credit: Tegmark et al.] Planck comb rbcol scaled http://www.astro.cardiff.ac.uk/~spxcen/CMB_Sims/Planck_comb_rbcol_scaled.png [credit: Chris North, Cardiff University] WMAP's Portrait of the Early Universe http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10123 [credit: NASA]
Comments
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When the Big Bang came it was 10 times 32 kelvin the hotest ever!!
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My brain is dripping out my ears
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BUT I AM LOOKING FORWARD TO A INTERESTING DISCUTION!
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I SEE IN THE THEORY OF THE ELEKTRIC UNIVERSE MORE LOGIC!
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Oh no. Here come the inflation fetishists.
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How can you tell the exact times for events in the universe, for example that the universe is 13.8Ga old when time isn't constant? Let's say that something has been moving at speed of c - 10^-99 since the Big Bang. It has experienced very little time and the universe is at most minutes old in its opinion, certainly not 13 billion years. The flow of time depends on the observer so how can we say these things without any bias?
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I love this so much.
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Terrific guys and gals. Thank you again for all your hard work. It enriches my life, joy and faith to take in such wonders. (Psalm 19).
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I hated math and astronomy but now after watching these videos I really appreciate it and the awesomeness of the universe and where we come from.
I wish I did not quit school so that I could have gone on and study astronomy. -
Whoa!!
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If there outward expansion, how do the original photons "return" to earth?
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that whole trillionth of a second thing, you can keep getting smaller and smaller, infinitely, what does this tell you about "time"
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geo working well!
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In the begin there was God
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Before the Universe started all those years ago, what created the space for it to be in ? If you understand what I mean.
The Universe is just the contents of space, what created the actual space ? -
Thank you very much for making this video, Phil Plait, Tholler, Jenkins, Sweeny and all the others at Crash Course Astronomy! You really did a great job with this video. I love your enthusiasm about science and I also share it! This is awesome! Thank you for making this video about how the Universe formed but I was a little surprised that you didn’t mention string theory or antimattter. Didn’t antimatter have a really big part in the forming of the Universe? Why didn’t you mention that, in the beginning, there were about as many antimatter particles as matter particles and they constantly collided with each other, releasing a lot of energy, and that the reason the Universe today exists is that there was a wee bit more matter than antimatter. Very much, nearly most, of the original antimatter and matter of this Universe got destroyed in these collisions and just a fraction remains to this day. I was told this by Stepehnen Hawking in his documentary ‘A Brief History of Time’.
No mention of stringy theory? -
i love watching these videos........they are packed with information....phil helped me a lot with biology at the time of my exams....thanks a lot!!!!!!
P.S :- DON'T STOP MAKING THESE VIDEOS PLEASE... -
I said this in high school an ill say this as a college sophomore, I would fail everything without this channel
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Just weird to think that one day, I will no longer enjoy a Thrash metal festival or Peanut Butter Cup Perfection ice cream from Cold Stone.
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I love this guy's enthusiasm
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