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Whoopteedoodoo t1_j6v0yii wrote

Just suppose for the sake of this question that the universe is finite and will eventually collapse in a Big Crunch. Will all the energy that was present in the Big Bang be recaptured? Would it be 100%? Or has energy escaped outside of the universe?

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mfb- t1_j6vpa0o wrote

There is no "outside the universe" by definition.

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Varsect t1_j6vikq4 wrote

Since your question assumes the multiverse existed, then the big bang in such a case was the universe borrowing some energy from the interuniversal distances. Now,this energy would be internuniversal, so there was no energy escaping.

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