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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.
It derives from the oscillatory universe or cyclic repetition interpretation of the Big Bang where the first cosmological event was the result of the collapse of a previous universe. According to one version of the Big Bang theory of cosmology, in the beginning the universe was infinitely dense.
Gravitational collapse of a massive star, resulting in a Type II supernova. Gravitational collapse is the contraction of an astronomical object due to the influence of its own gravity, which tends to draw matter inward toward the center of gravity. [1] Gravitational collapse is a fundamental mechanism for structure formation in the universe.
A group of physicists have theorized a mechanism for "cosmological collapse" which predicts the universe will at some point stop expanding.
Heat death of the universe – Possible fate of the universe List of other end scenarios than Heat Death – Theories about the end of the universe Timeline from Big Bang to the near cosmological future – Visual representation of the universe's past, present, and future Pages displaying short descriptions of redirect targets
Photo Illustration by Kelly Caminero / The Daily Beast / Getty The universe is expanding. No one with any expertise in astronomy or physics disagrees with that fact.Likewise, nobody really ...
This future history and the timeline below assume the continued expansion of the universe. If space in the universe begins to contract, subsequent events in the timeline may not occur because the Big Crunch, the collapse of the universe into a hot, dense state similar to that after the Big Bang, will prevail. [14] [15]
Newton acknowledged the problem that the stars would have to be precisely placed to maintain such an unstable equilibrium without collapse, and later claimed that God prevented the collapse by making "constant minute corrections"; "a continual miracle is needed to prevent the Sun and the fixt stars from rushing together through gravity." [1] [2]