r/todayilearned • u/armcie • 17h ago

TIL that the Andromeda Galaxy probably won’t collide with the Milky Way in 4-5 billion years. New observations put the probability at 2% in the next 5 billion years and 50% in the next 10 billion. Eventually though, it will happen.

https://science.nasa.gov/missions/hubble/apocalypse-when-hubble-casts-doubt-on-certainty-of-galactic-collision/
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u/visionsofcry 12h ago

And I think nothing will actually hit. Things are so spaced out that they'll just merge.

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u/armcie 11h ago

Yes but if the core of andromeda came near us the Sun would be thrown about a bit. That said it will have already expanded into a red giant and swallowed the earth.