@CNN: The revelation that a black hole grew in just five hundred million years challenges our models of how early galaxies formed | Don Lincoln writes for @CNNOpinion https://t.co/cCi563sinX https://t.co/Id6mwgw03H
The revelation that a black hole grew in just five hundred million years challenges our models of how early galaxies formed | Don Lincoln writes for @CNNOpinion https://t.co/cCi563sinX http://pic.twitter.com/Id6mwgw03H
— CNN (@CNN) December 12, 2017