According to a new study using NASA's Chandra X-ray Observatory, there's a breed of supermassive black holes out there a lot more ravenous than usual. Supermassive black holes are found in the middle of galaxies, measuring millions to billions of times the mass of our Sun. Some of them actively consume gas and dust, which form a "disc" around the mass -- as matter from that disc fall into the black hole, a jet of particles stream out, appearing as cloudy streaks. These are called quasar black holes, and they usually shine more brightly than the galaxy itself, since that disc radiates huge amounts of energy. The ones discovered by Bin Luo and his team of astronomers, however, "[dine] at enormous rates, at least five to ten times faster than typical quasars."