... Behemoth black hole found in an unlikely place . ... Black hole expelled from its parent galaxy . ... Because of the tremendous power of the recoil the black hole, which has a mass of several 100 millions solar masses, was catapulted from the core of its parent galaxy. ... Another implication of the discovery is that there must be galaxies without black holes in their nuclei &#8212 as well as black holes that float forever in space between the galaxies. ... Black hole sheds light on galaxy . ...