 Name the Antenna galaxies. These two spiral galaxies, drawn together by gravity, started to interact a few hundred million years ago. They are the nearest and youngest examples of a pair of colliding galaxies. This Hubble image has uncovered over one thousand bright, young star clusters bursting to life in a brief, intense, brilliant firework show. By the way, they are called the Antenna because the pair of long tails of luminous matter formed by the encounter resembles an insect's antenna.