Merging NGC NGC 2623 is really two galaxies that are becoming one. Seen to be in the final stages of a titanic galaxy merger, the pair lies some 300 million light-years distant toward the constellation Cancer.
This is a Hubble Space Telescope image of a pair of star clusters that are believed to be in the early stages of merging. The clusters lie in the gigantic 30 Doradus Nebula, which is light-years from Earth. (via Merging clusters in 30 Doradus
aka NGC 5194 the Whirlpool aka NGC 5195 (left) The Whirlpool Galaxy is a grand-design spiral galaxy, interacting with NGC a dwarf galaxy. Both galaxies are located 23 ± 4 million light-years away in Canes Venatici.