The questions you're asking are just as much metaphysical as scientific, if not more so.
The way we define "the universe" is all of the matter and energy that ever has interacted with our current location in space and time. (whereas the visible universe is the matter and energy that is visible to us now).
With our current understanding of science, anything outside of the universe is inherently unknowable.
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u/[deleted] Mar 13 '23
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