Big Crunch

Definition

The Big Crunch is a hypothetical scenario for the ultimate fate of the universe, in which the expansion of the universe eventually reverses and the universe recollapses, ultimately causing the cosmic scale factor to reach absolute zero, an event potentially followed by a reformation of the universe starting with another Big Bang. The vast majority of valid evidence, however, indicates that this hypothesis is not correct. Instead, astronomical observations show that the expansion of the universe is accelerating rather than being slowed by gravity, suggesting that a Big Chill or Big Rip is much more likely to occur. Nonetheless, some physicists have proposed that a "Big Crunch-style" event could result from a dark energy fluctuation.

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Mather Jürgen Ehlers Kali Yuga Kalki Katechon Kinetic bombardment Kinetic energy weapon Lambda-CDM model Land consumption Land degradation Land surface effects on climate Large quasar group Last Judgment List of apocalyptic and post-apocalyptic fiction List of apocalyptic films List of cosmologists List of dates predicted for apocalyptic events List of disaster films List of extinction events M-type star Mahdi Maitreya Malthusianism Man of sin Marc Aaronson Mass mortality event Messiah Messiah in Judaism Messianic Age Messianism Micro black hole Micronova Millenarianism Millennialism Milton Humason Mount Wilson Observatory Mutually assured destruction Near-Earth object Near-Earth supernova Nemesis (hypothetical star)New Earth (Christianity)New Jerusalem New World Order conspiracy theory Nibiru cataclysm Nicholas B. 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