so demonic, brehs
http://en.wikipedia.org/wiki/Abell_1689
http://en.wikipedia.org/wiki/Abell_1689
Abell 1689 is a galaxy cluster in the constellation Virgo nearly 2.2 billion light years away. It is one of the biggest and most massive galaxy clusters known and acts as a gravitational lens, distorting the images of galaxies that lie behind it.[4] It has the largest system of gravitational arcs ever found.[5]
There is evidence of merging and gases in excess of 100 million degrees.[5] The massive gravitational nature of this system has been used to study dark matter and the effects of gravitational lensing.[6]