The northern constellation Andromeda is home to the Andromeda galaxy, a nearby spiral galaxy similar to our own Milky Way. Unfortunately, this time of year Andromeda does not rise until well after midnight, but if you want to stay up later, or wait until the fall when the constellation will rise earlier, and you have dark enough skies, you will be able to see the Andromeda galaxy with the naked eye. (And if the sky is not dark enough, you can usually find it with a pair of binoculars.) Scientists have recently confirmed that the Andromeda galaxy is one a collision course with our own Milky Way, with the encounter expected to occur in some 4 billion years. Watch the video above from NASA for more.