The team found that a multiply-connected universe about three... - Deepstash

The team found that a multiply-connected universe about three to four times larger than our observable bubble best matched the CMB data. While this result technically means that you could travel in one direction and end up back where you started, you wouldn't be able to actually accomplish that in reality. We live in an expanding universe , and at large scales the universe is expanding at a rate that is faster than the speed of light, so you could never catch up and complete the loop.

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morttis

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