From planet Earth, we see this strongly distorted pair of galaxies, cataloged as Arp 81, as they were only about 100 million years after their close encounter. The havoc wreaked by its mutual gravitational interaction during the encounter is detailed in this color composite showing twisted streams of gas and dust, a chaos of massive star formation, and a tidal tail 200,000 light-years or so for stretching, cosmic wreckage Also known as NGC 6622 (left) and NGC 6621, the galaxies are roughly equal in size but are destined to be in a large galaxy in the distant future; Located in the constellation Draco, the galaxies are 280 million light-years away. Even more distant background galaxies can be spotted in the sharp, reprocessed, image from Hubble Legacy Archive data.
From @emamuddin