The Big bang theory - space/time/matter/energy started to expand ~13.7 billion years ago from an infinitely small point and are still expanding today.
This means that space/time are not infinite.
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Fascinating, of course; but do we have any reason to believe that space/time and matter/energy share the same root origin?
My philosophy up to this point has been that the big bang theory would suggest the expansion/evolution of matter and energy within an already constant space/time continuum, which continued into infinity prior to that point, and will continue into the infinite future.
If your proposition is correct, then it seems that we should be embracing the possibility that the "spark" so to speak, which initiated the beginning of our universe, actually was created or set into motion by an entity or object which exists in a dimension wherein time and space do not exist.