Will the Milky Way and Andromeda galaxy dash each other?

Answer 1

If the Milky way and Andromeda does in fact collide (the accuracy of the prediction is not accurate enough to confirm certainty), then we can expect one of two outcomes.

1. Andromeda envelopes our galaxy and together they form a much larger elliptical galaxy.
2. They pass right past each other, with the gravity of Andromeda "stealing" part of our galaxy which would lead to our solar system being ejected from the Milky way or forming part of Andromeda. (by that time our Sun would have, or could have gone Red Giant already)