They don't really collide. They swirl around each other and eventually merge. Gravity is what makes it happen.Answer: Gravity makes the galaxies move; another important consideration is that the...
The Milky Way galaxy will collide with Andromeda, but it will take about a 2 billion years until they collide and finish. Earth will not get blown up, but by then, the sun will probably be out of...
As a galaxy, like everything, is mostly nothing, not much. Actual collisions are eminent, but are not the norm. A lot of gravitational flinging goes on, and eventually the two galaxies coalesce into...
They can merge, to combine into a single, larger, galaxy. Or, they can separate again. ------------ "Collide" is a misnomer because of the vast distances between stars in a galaxy, the odds of a...
When galaxies collide, they don't actually smash into each other; they swirl around each other and eventually become a single galaxy.
Galaxies collide very often, although they take millions of...