Indeed. Galaxies are much "closer" to each other in this sense than are most sma...

dreamcompiler on Feb 28, 2022 | parent | context | favorite | on: Milky Way and Andromeda galaxies are already mergi...

Indeed. Galaxies are much "closer" to each other in this sense than are most smaller things in the universe.

If we assume the diameter of the solar system is 100 AU (the size of Pluto's orbit) and Proxima Centauri is 4 LY away, the ratio is about 2500: The distance to Proxima Centauri is about 2500 times the diameter of the solar system.

If we assume the diameter of the Milky Way is 100k LY and the distance to Andromeda is 2.5 million LY, the ratio is 25. Not 2500 but 25.

brabel on Feb 28, 2022 [–]

And there's a lot of smaller galaxies in between: https://en.wikipedia.org/wiki/List_of_nearest_galaxies