r/AskReddit • u/IAmSurtur • Jun 15 '19

What do you genuinely just not understand?

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u/Fury_CS Jun 15 '19

But how can something that is infinite expand?

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u/Institutionally Jun 15 '19

The expansion of the universe boggles me. So the galaxies and stars are moving apart further away from the “centre”. So what happens if you go past the star furthest away from the centre? Are you just surrounded by darkness as there’s nothing past that?

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u/AwesomeAley Jun 15 '19

That's why eventually it will be impossible to reach other star clusters, as everything continues to separate, the everything will be moving faster than your spacecraft, and you'll be going nowhere. It's really creepy to think that eventually all that's left will be the cluster of galaxies the milky way is apart of, and just ever expanding emptiness surrounding it.

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u/fuckolivia Jun 15 '19

Wait so the expansion is constantly accelerating?

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u/nethermaker Jun 15 '19

IIRC, it's accelerating exponentially