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24 juillet 2023 - 14:12
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Deep Time: Crash Course Astronomy #45
As we approach the end of Crash Course Astronomy, it’s time now to acknowledge that our Universe’s days are numbered. Stars will die out after a few trillion years, protons will decay and matter will dissolve after a thousand trillion trillion trillion years, black holes will evaporate after 10^92 years, and then all will be dark. But there is still hope that a new Universe will be born from it.
Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster
If you want to learn more about the creation and death of the universe, watch Crash Course Big History here: https://youtube.com/playlist?list=PL8dPuuaLjXtMczXZUmjb3mZSU1Roxnrey
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Chapters:
Introduction: The End of the Universe 00:00
Scientific Notation 1:34
The Five Ages of the Universe 2:20
The Primordial Era 2:52
The Stelliferous Era (You Are Here!) 3:05
The Degenerate Era 4:48
The Black Hole Era 7:42
The Dark Era 9:39
The Big Rip 10:20
Other Possibilities: Multiverses & The Cosmic Reboot 11:52
Review 14:10
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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
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Hawking Radiation Mechanism resources:
https://en.wikipedia.org/wiki/Hawking_radiation
http://math.ucr.edu/home/baez/physics/Relativity/BlackHoles/hawking.html
http://casa.colorado.edu/~ajsh/hawk.html
http://physics.stackexchange.com/questions/154647/how-does-the-hawking-radiation-mechanism-cause-a-black-hole-to-lose-its-mass
PHOTOS/VIDEOS
Hubble ACS SWEEPS Field http://hubblesite.org/gallery/album/star/star_field/pr2011016b/ [credit: NASA, ESA, W. Clarkson (Indiana University and UCLA), and K. Sahu (STScI)]
Flare http://www.nasa.gov/sites/default/files/thumbnails/image/dg_cvn_flare_final_4k_0.jpg [credit: NASA's Goddard Space Flight Center/S. Wiessinger]
Hubble Views Stellar Genesis in the Southern Pinwheel http://hubblesite.org/newscenter/archive/releases/2014/04/image/a/ [credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)]
White Dwarf http://www.nasa.gov/multimedia/imagegallery/image_feature_468.html [credit: NASA, ESA, H. Bond (STScI) and M. Barstow (University of Leicester)]
Neutron Star Illustrated https://commons.wikimedia.org/wiki/File:Neutron_star_illustrated.jpg [credit: NASA, Casey Reed - Penn State University]
Black Holes: Monsters in Space http://www.nasa.gov/mission_pages/nustar/multimedia/pia16695.html [credit: NASA/JPL-Caltech]
Binary Neutron Star Video https://nasaviz.gsfc.nasa.gov/vis/a030000/a030500/a030569/slide_04-B3_CWDB_inspiral.mp4 [credit: NASA]
Giant Elliptical Galaxy NGC 1316 in Fornax Cluster https://www.eso.org/public/images/eso0024a/ [credit: ESO]
Proton Aurora http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=20099 [credit: NASA/Goddard Space Flight Center Conceptual Image Lab]
A Race Round a Black Hole http://www.nasa.gov/centers/goddard/universe/blackhole_race.html [credit: NASA/Dana Berry, SkyWorks Digital]
The Big Bang http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10128 [credit: NASA]
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)]
Galaxy http://apod.nasa.gov/apod/ap150614.html [credit: Subaru Telescope (NAOJ), Hubble Space Telescope, Robert Gendler]
One star, many stars (M13) http://www.deepskycolors.com/archive/2011/05/04/one-star-many-stars-M13.html [credit: Rogelio Bernal Andreo]
Earth https://www.nasa.gov/content/goddard/earth-from-space-15-amazing-things-in-15-years [credit: NASA's Earth Observatory]
Explosion video [credit: Shutterstock / Richard Finch]
