What The Night Sky Will Look Like Over the Next 7 Billion Years
Here’s a little-known fact: If our eyes were sensitive enough, the Andromeda galaxy would be wider than the Moon in the night sky.
Another little-known fact: That same Andromeda galaxy, the Milky Way’s closest neighbor, is on a collision course with our spiral home. Starting in 3.5 billion years or so, our galaxies will smack into each other. Galaxies are mostly empty space, so it won’t be as catastrophic as you might imagine, but it will certainly change the organization of the stars.
This video is what the night sky may look like as Andromeda gets closer, since none of us will be around to see it. Also, be sure to check out this timeline of the far future.