Our nearest major galactic neighbour is the Andromeda Galaxy a | Science & Technology

Our nearest major galactic neighbour is the Andromeda Galaxy at 2.5 million light years away, and contains up to one trillion suns. It is heading towards us at a speed of 313,200 miles per hour, when it will eventually collide with our Milky Way Galaxy. It will take Andromeda roughly 3 billion years to get here