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Curated by: The Science Asylum (241 videos)
To understand how the universe can expand faster than light, we need to understand how causality works in Einstein's general relativity. HUGE thanks to Dianna Cowern for helping make this video more relatable! https://www.youtube.com/@physicsgirl ________________________________ VIDEO ANNOTATIONS/CARDS The Cosmic Microwave Background: https://youtu.be/Js4Oy2CjOtE What is Time?! https://youtu.be/7HBKEDyFTv8 Cosmic Horizons: https://youtu.be/o3SeqlyQY_k ________________________________ RELATED YOUTUBE VIDEOS Domain of Science on FTL Galaxies: https://youtu.be/cadNZJvfl7s ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum Advanced Theoretical Physics (Paperback): http://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: https://www.scienceasylum.com ________________________________ HUGE THANK YOU TO THESE PATRONS Asylum Counselors: Matthew O'Connor, Nikolaos Vasiloglou II Asylum Orderlies: Fabio Manzini, William Morton, Medec Hurtz Einsteinium Crazies: Charles Copley, Ken Davis, Wacky, Eoin O'Sullivan, LT Marshall, Ilya Yashin Plutonium Crazies: Madhu Subbu, Ellis Hall, Compuart, Kevin MacLean, Al Davis Platinum Crazies: Mr. Orn Jonasar, David Johnston, Cody Martin, Boris Petrovchich, André Weyermann, Olga Cooperman, Tom Hawking, Kyle Bowles, Marino Hernandez, Jon Adams, Vittorio Monaco, Stephen Blinn, Mikayla Eckel Cifrese, Jonathan Reel ________________________________ OTHER SOURCES https://www.forbes.com/sites/startswithabang/2019/11/07/this-is-how-distant-galaxies-recede-away-from-us-at-faster-than-light-speeds/ https://math.ucr.edu/home/baez/physics/Relativity/GR/hubble.html https://ned.ipac.caltech.edu/help/zdef.html https://astronomy.swin.edu.au/cosmos/c/cosmological+redshift https://arxiv.org/abs/astro-ph/0011070v2 https://arxiv.org/abs/astro-ph/0310808 https://what-if.xkcd.com/13/ https://en.wikipedia.org/wiki/Mollweide_projection ________________________________ LINKS TO COMMENTS https://www.youtube.com/watch?v=spCBFO5qob8&lc=UgzSlwrWge1ABcPOWyd4AaABAg https://www.youtube.com/watch?v=spCBFO5qob8&lc=UgwN-FugkmrKIp5bREd4AaABAg https://www.youtube.com/watch?v=spCBFO5qob8&lc=UgyL9RpAxMf_uOzgkcZ4AaABAg https://www.youtube.com/watch?v=spCBFO5qob8&lc=UgxmCO3LBvJQG_tZep14AaABAg ________________________________ IMAGE CREDITS Andromeda Galaxy: https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA15416 Cosmic Microwave Background: https://sci.esa.int/web/planck/-/51553-cosmic-microwave-background-seen-by-planck https://sci.esa.int/web/planck/-/52886-cosmic-microwave-background-seen-by-planck-equirectangular-projection Derek Muller: https://twitter.com/veritasium/status/833371599491305472/photo/1 ________________________________ TIME CODES 00:00 Cold Open 00:31 Light is slow. 01:49 Universal speed limit? Not really. 02:36 Causality 04:00 Why are galaxies going so fast? 05:20 Hubble Horizon 06:43 Comoving Frame 08:05 Peculiar vs Recession Velocity 10:15 Doppler vs Cosmological Redshift 11:24 Summary 12:01 Outro 12:18 Featured Comment