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Comment by hnuser123456

The universe is 13.7b yo, but due to acceleration of expansion, if you could "teleport", it's actually currently 93b ly across. So we're already in a bubble within a greater universe that we'll never be able to escape even if you could instantly reach lightspeed right now, and due to the expansion continuing to increase, the fractional size of this bubble relative to the rest is shrinking. Faraway galaxies that are "currently" on the edge of the bubble but expanding away are becoming forever unreachable as you read this.

https://en.wikipedia.org/wiki/Comoving_and_proper_distances#...

https://public.nrao.edu/ask/inconsistency-between-the-age-an...

However, the local group/cluster of galaxies is close enough to remain gravitationally bound, and we're still gonna merge with Andromeda.

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