Date Added: August 11, 2016
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: store.dftba.com/products/crashcourse-astronomy-poster -- GEOMETRY OF THE UNIVERSE RESOURCES Geometry: abyss.uoregon.edu/~js/cosmo/lectures/lec15.html starchild.gsfc.nasa.gov/docs/StarChild/questions/question35.html Expanding faster than light: 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: 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: youtube.com/pbsdigitalstudios Follow Phil on Twitter: twitter.com/badastronomer Want to find Crash Course elsewhere on the internet? Facebook - www.facebook.com/YouTubeCrashCourse Twitter - www.twitter.com/TheCrashCourse Tumblr - thecrashcourse.tumblr.com Support CrashCourse on Patreon: www.patreon.com/crashcourse -- PHOTOS/VIDEOS The Big Bang svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10128 [credit: NASA] Collision Scenario for Milky Way and Andromeda Galaxy Encounter 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 www.spacetelescope.org/videos/astro_bn/ [credit: ESO/M. Kornmesser] Host Galaxies of Distant Supernovae 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 svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10135 [credit: NASA] Expanding Universe www.spacetelescope.org/videos/hst15_expanding_universe/ [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)] Hubble Ultra Deep Field 2014 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)] Course Index
In this Crash Course series, marvel at the wonders of astronomy with your host for this intergalactic adventure, the Bad Astronomer himself -- Phil Plait. In just 40 short lessons, you will learn the basics of the oldest science known to humanity.
Be sure to check out links to relevant Photos in the description for each video.