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cstrand31 t1_j25i7ka wrote

No. The Big Bang is the beginning of this universe. The Big Crunch would’ve been the ending of any theoretical previous universe.

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Chadmartigan t1_j25lt49 wrote

That depends on which theory you subscribe to. For example, conformal cyclical cosmology does not require a Big Crunch (but does require mass decay, which is not a trivial assumption).

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