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Universe's expansion 'is now slowing, not speeding up'

Universe's expansion 'is now slowing, not speeding up'

13 comments

·November 6, 2025
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redwood

Was there a date at the top of this? I didn't see one. I saw a similar headlines earlier this year and I'm trying to understand that this is something new

felixfurtak

the linked journal article is dated Nov 6 2025

candiddevmike

Aside from unanswerable questions (has the universe started to fill it's container? Is a simulation property nearing "1"?), does this make long distance space travel feasible again? I thought there was something around the universe is expanding too fast to visit places like Alpha Centuri (and preventing visitors to us).

indoordin0saur

The universe was always only expanding between galaxies, not within them.

oofbey

That limitation only counts for visiting other galaxies. Travel within the galaxy is always possible, regardless of the universe’s expansion. And Alpha Centauri is super close, even within our galaxy.

dtech

Specifically the local group, so Milky way + Andromeda and some dwarf galaxies

samdoesnothing

Thanks, AI.

denismenace

Did it change during our life time?

oofbey

Just our understanding of it. That’s flipped multiple times in my lifetime.

karakot

What does 'now' mean here?

plasticchris

Probably it means that now we have evidence that… it is a colloquialism

Edit: yep, The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests.

sermah

Recent years, probably because of large data centers /s

null

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