TallyMan wrote:
I agree with Alex. Finite but unbounded. I'm a bit rusty on the science now but as I remember if the universe contains enough matter then it is finite but unbounded meaning as Alex put it that if you travel in a straight line you will eventually get back to where you started. However, if there is not enough matter, then the universe is finite and bounded but either way you cannot get "outside" of the universe and the question what is beyond the edge of the universe does not apply because the universe itself creates the space and time in which it exists. There is no such thing as beyond the edge.
Hmm. I could swear I heard that by more recent observations it was more likely infinite due to a below threshold energy density, but then I don't recall. I can't seem to find a source for it, and wikipedia is uncharacteristically useless on this one.
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