Less than 500 million years later, it was full of monster black holes embedded in vast galaxies. (discovermagazine.com)
DID monster black holes pull the first galaxies together, or were they born inside those galaxies? (newscientist.com)
As most galaxies are known to contain monster black holes, the obvious question is: How do black holes affect the evolution of galaxies and vice versa? (science.howstuffworks.com)