Neil deGrasse Tyson describes the different prevailing theories on how the universe will end.

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What does dark energy accelerating expansion lead to? Can you rip a quark apart? Learn bout the heat death of the universe, the big rip, and whether the universe could recollapse on itself to create another big bang. Could there be infinite big bangs?

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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00:00 - Introduction: The End
00:21 - Theory #1: The Heat Death of the Universe
6:36 - Theory #2: The Big Rip
10:18 - Theory #3: The Big Crunch
11:45 - On Fearing the Death of the Universe