Rare black hole 1 billion times the mass of the sun could upend our understanding of galaxy formation
A rare supermassive black hole found hiding at the dawn of the universe could indicate that there were thousands more of the ravenous monsters stalking the early cosmos.
![Rare black hole 1 billion times the mass of the sun could upend our understanding of galaxy formation](http://cdn.mos.cms.futurecdn.net/HLYf65jTfRp3mB4jjmpiQn.jpg?#)