andromeda size

When galaxies collide, size matters if you want to know the fate of our Milky Way

When galaxies collide, size matters if you want to know the fate of our Milky Way

Our Milky Way and the Andromeda galaxy – two giant galaxies in our local patch of the universe – are heading for an immense collision with each other in only a few billion years’ time. So which will dominate in this intergalactic tussle?