Question

which galaxy will collide with the milky way in several billion years?

Answer 1

The Andromeda Galaxy (M31) is the galaxy that is projected to collide with the Milky Way in about 4.5 billion years. This collision will lead to the formation of a new galaxy, often referred to as "Milkomeda" or "Milkdromeda". The process will take place over several billion years and will involve gravitational interactions that will significantly reshape both galaxies.