... Tonight's Sky . ... Behemoth black hole found in an unlikely place . ... black holes . ... Do medium-sized black holes exist? ... Until now, astronomers had suspected that globular clusters like the one in this image were the most likely place to find medium-sized black holes. ... Medium black holes would be quite hefty with a lot of gravity, so if one did exist in a globular cluster, scientists argue that it would quickly drag any small black holes into its grasp. ... Hungry, hungry black holes . ...