... Behemoth black hole found in an unlikely place . ... black holes . ... Black hole naps amid stellar chaos . ... Black hole growth and star formation often go hand in hand in distant galaxies, said Daniel Stern, NuSTAR project scientist at NASA s Jet Propulsion Laboratory, Pasadena, California. ... They shine more brightly than typical stellar-mass black holes generated from dying stars but are fainter and more randomly distributed than the supermassive black holes at the centers of massive galaxies....