Cosmic Blowout: Black holes spew as much as they consume

Notorious for gorging on matter, the supermassive black holes at the cores of galaxies may blow out as much material as they swallow. A study reported last week suggests that during the roughly 10 billion years that these black holes power the brilliant light beacons known as quasars, they also generate high-speed winds that eject an amount of gas equivalent to billions of suns.