jan 132013
Anne's Picture of the Day: The Train Wreck Cluster

January 13, 2013 The Train Wreck Cluster, a galaxy cluster in Orion Image Credit: NASA, ESA, CFHT, and M.J. Jee (University of California, Davis) The Train Wreck Cluster (Abell 520) is a galaxy cluster of 5.4 million light-years across that contains about 300 galaxies. It lies some 2.65 billion light-years away in the constellation of [continue reading]