Space.com #Black Holes’ Cosmic ‘Choir Singers’ Finally Identified 29 July 2016 fborgosano Leave a comment Share: Powerful X-rays released by the most massive black holes can reveal a great deal about how galaxies grow and form. NASA’s NuSTAR space telescope has identified some of the most powerful producers. from Space.com ift.tt/2aCIH7d Share:
