Galactic collision! The Hubble Space Telescope captured this beautiful look at NGC 3921, a pair of disk galaxies in the late stages of merger. These galaxies, both about the same size, began merging 700 million years ago, as you can see from the distortions, including loops and tails, caused by the merge.
Beautiful. I can see a piece breaking off in bottom right. Its kinda tiny picture but I guess it is really far away./snark
Edit: Yey it works now! Gorgeous picture! I always wonder what its like when galaxies collide. I mean they are so huge, if you are living there does it really suck or do you mostly not notice?