How Can the Universe Be Flat?

Can geometry predict the future? Cosmologists think the overall curvature of universe can tell us secrets about how it will eventually end. Host: Reid Reimers For special, curated artifacts of this universe, check out https://scishowfinds.com/ ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Sam Lutfi, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://carina.fcaglp.unlp.edu.ar/extragalactica/Bibliografia/Ryden_IntroCosmo.pdf http://hyperphysics.phy-astr.gsu.edu/hbase/Astro/denpar.html https://arxiv.org/pdf/1303.5076.pdf https://arxiv.org/pdf/1401.1389.pdf https://www.symmetrymagazine.org/article/april-2015/our-flat-universe?email_issue=725 https://arxiv.org/pdf/1502.01589.pdf https://blogs.scientificamerican.com/degrees-of-freedom/httpblogsscientificamericancomdegrees-of-freedom20110731what-do-you-mean-the-universe-is-flat-part-ii/ ------- Images: https://commons.wikimedia.org/wiki/File:Spacetime_curvature.png http://www.spacetelescope.org/images/heic0406a/ https://en.wikipedia.org/wiki/Spherical_geometry#/media/File:Triangles_(spherical_geometry).jpg https://commons.wikimedia.org/wiki/File:End_of_universe.jpg https://commons.wikimedia.org/wiki/File:FirstNeutrinoEventAnnotated.jpg https://commons.wikimedia.org/wiki/File:WMAP_2008_universe_content.png https://www.nasa.gov/mission_pages/chandra/supernova-ejected-from-the-pages-of-history.html http://carina.fcaglp.unlp.edu.ar/extragalactica/Bibliografia/Ryden_IntroCosmo.pdf (page 120) https://svs.gsfc.nasa.gov/12656