I have no idea. I’m not sure what the theory about alternative universes in science is, even in science-fiction there is debate on what happens.
I know more about the sci-fi side than the actual science side. According to Doctor who it is impossible to travel between dimensions without ripping a hole in the universe.
Great question! Well, given that we don’t know for sure that there are other universes, and we dont know how to get to another universe – it is impossible to say whether or not we could get back!
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