... Behemoth black hole found in an unlikely place . ... Unexpectedly little black hole monsters rapidly suck up surrounding matter . ... The team s observations help shed light on the nature of ULXs and impact our understanding of how supermassive black holes in galactic centers are formed and how matter rapidly falls onto those black holes. ... As matter from the star falls onto the black hole, an accretion disk forms around the black hole. ... Dark matter guides growth of supermassive black holes . ...