Scientists discover Milky Way's 'long-lost sibling' galaxy
Scientists have discovered that our galaxy, Milky Way, once had a massive sibling galaxy that was shredded by our neighbour galaxy, Andromeda. The galaxy, named M32p, would have been the third biggest galaxy in our local galaxy group, behind Andromeda and Milky Way. Notably, Milky Way and Andromeda will collide to form a larger galaxy in about four billion years.