Will the Universe Expand Forever?

From the creator

Will the Universe continue to expand outward or will it succumb to gravity and collapse upon itself? Find out in this episode of Space Time. Help us win a Webby Award by voting here: https://pv.webbyawards.com/2016/online-film-video/video-channels-and-networks/science-education Get your own Space Time t-shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Throughout history, there has been much speculation about what the fate of the universe would be. Many theorized that the universe would eventually succumb to the pull of gravity, and reverse its expansion in what was being called ‘The Big Crunch.’ However, with the help of mathematical equations from Newton, Einstein, and Alexander Friedmann, we now have an answer. Special thanks to NAOJ and the European Southern Observatory for allowing usage of their photo of M83: http://apod.nasa.gov/apod/ap151008.html Flourine production in lower mass stars: http://phys.org/news/2014-08-toothpaste-fluorine-stars.html _____________________ Correction: escape velocity = square root of (2GM/r) - we accidentally left out the 2 _____________________ COMMENTS: Henrique Rigitano https://www.youtube.com/watch?v=6yLGeviU8FM&lc=z12menfxkp

Published 2016-04-13 · Watch on YouTube ↗
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