http://www.newsweek.com/massive-colliding-black-holes-expand-universe-ligo-gravitational-waves-1648561

Scientists may have solved the mystery of how most massive black holes are formed.

Researchers from the University of Hawaiʻi at Mānoa, the University of Chicago, and the University of Michigan at Ann Arbor, propose that black holes with masses that were previously unexplainable could be growing hand-in-hand with the accelerating expansion of the Universe.