Dark matter and galaxies part ways in collision between hefty galaxy clusters
Thursday, February 28, 2013 - 09:00
in Astronomy & Space
(Phys.org)—This composite image shows the distribution of dark matter, galaxies, and hot gas in the core of the merging galaxy cluster Abell 520, formed from a violent collision of massive galaxy clusters that is located about 2.4 billion light years from Earth.