Astronomers Witness Whopper Galaxy Collision
A major cosmic pileup involving four large galaxies could give rise to one of the largest galaxies the universe has ever known, scientists say.
The galaxies will eventually merge into a single, colossal galaxy up to 10 times as massive as our own Milky Way.
"When this merger is complete, this will be one of the biggest galaxies in the universe," said study team member Kenneth Rines of the Harvard-Smithsonian Center for Astrophysics.
http://www.space.com/scienceastronomy/070806_whopper_gmerger.html