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If our universe is expanding as a consequence of the Big Bang, what is it expanding into?


If I could travel faster than the speed of light, what would I see as I approached the expanding edge of the universe? If the universe is "everything", then how can it expand into what we would call "nothing"? Is the concept of an alternative universe just nonsense or is it a plausible idea? What do we call the thing that contains more than one universe if we already define universe to include everything?

 

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