Magnetic field may be keeping Milky Way`s black hole quiet
(PHYSorg.com Space & Earth)

Supermassive black holes exist at the center of most galaxies, and our Milky Way is no exception. But many other galaxies have highly active black holes, meaning a lot of material is falling into them, emitting high-energy radiation in this `feeding` process. The Milky Way`s central black hole, on the other hand, is relatively quiet. New observations from NASA`s Stratospheric Observatory for Infrared Astronomy, SOFIA, are helping scientists understand the differences between active and quiet black holes.