What is the most recent galactic cannibalism event on record? Is it possible this could occur between Andromeda and the Milky Way?
It's hard to say what was the most recent galactic cannibalism event, but it it's safe to say it's impossible for one to occur between Andromeda and Milky Way
The Andromeda galaxy is over 2.5 million light years away. For galactic cannibalism to occur, the galaxies have to be much much closer, so that their gravities can impact one another.