El Gordo - One Fat Galaxy
Tuesday, January 10, 2012 - 17:10
in Astronomy & Space
An extremely hot, massive young galaxy cluster named ACT-CL J0102-4915 is the largest ever seen in the distant Universe, and has been has been nicknamed El Gordo — the "big" or "fat one" in Spanish. It consists of two separate galaxy sub-clusters colliding at several million miles per hour, and is so far away that its light has traveled for seven billion years to reach Earth. read more