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Will The Universe Expand Forever? | Space Time | PBS Digital Studios

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 Astronomy   |   Physics   |   Science
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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

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
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Correction:
escape velocity = square root of (2GM/r)
- we accidentally left out the 2
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COMMENTS:

Henrique Rigitano
https://www.youtube.com/watch?v=6yLGeviU8FM&lc=z12menfxkpjnwfkfw23ehh4jwmqgst3ag04

ReVenGe TheRedFireFox
[deleted]

Richard van der Linden
https://www.youtube.com/watch?v=6yLGeviU8FM&lc=z13vglqyqzz4zbljq04cfthoqynjxhpwer00k

Mason Glaves
https://www.youtube.com/watch?v=6yLGeviU8FM&lc=z12cgzexssvbzb5ls23csfyq4papudwco

Rod Landaeta
https://www.youtube.com/watch?v=6yLGeviU8FM&lc=z13icr0jtzzqj5ro304cjjmbnpqstrnx52c

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Written and hosted by Matt O’Dowd
Made by Kornhaber Brown (www.kornhaberbrown.com)

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