|  |  | NASA : How Antennae Galaxies Are Formed? www.nasa.gov — This image of the Antennae galaxies is the sharpest yet of this merging pair of galaxies.During the course of the collision,billions of stars will be formed. The brightest and most compact of these star birth regions are called super star clusters.The two spiral galaxies started to interact a few 100 million years ago,making the Antennae galaxies..More... (Space) Comments Email Added 2008-07-28 05:19:42 optimusprime01