@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/avlWJz1frk https://t.co/62f0Hjz8O8
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/avlWJz1frk http://pic.twitter.com/62f0Hjz8O8
— CNN (@CNN) December 11, 2017