The Antennae galaxies, located about 62 million light-years from Earth. This composite image includes images from the Chandra X-ray Observatory (blue), the Hubble Space Telescope (gold and brown), and the Spitzer Space Telescope (red).
Arp 81 is two galaxies in collision, distorted by mutual gravitational interaction. NGC 6622 is to the left; NGC 6621 to the right. Arp 81 is located in the constellation Draco about 280 million light-years from Earth.