- #1
Alltimegreat1
- 115
- 5
Since space is rapidly expanding between galaxies, why are the Milky Way and Andromeda galaxies on a collision course with each other? Do galaxies need to be a certain distance apart for the force of their gravity to be weak enough so that it cannot overcome the expansion of space? Or is it because the Milky Way and Andromeda galaxies are simply moving toward each other as part of their orbits around the Great Attractor?