I thought the prevailing view was that the Universe was practically infinitesimal to start with!?The prevailing view is that the space of the Universe has never been bounded.
The part that makes up our current visible universe was of infinitesimal size at one point, but that doesn’t mean there wasn’t more stuff beyond that now or then.
The Universe is finite, in both time and spaceIf that’s true, it must abruptly end at some point. Is that what you’re proposing? It sort of works for a big crunch model, but again, that model predicts different things than what we observe, notably the acceleration of expansion. It will never crunch.
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