Supermassive black hole roars to life before astronomers' eyes in world-1st observations
For the first time ever, astronomers have witnessed the black hole at the center of a galaxy roaring to life in real time — and they're not sure why it happened. The awakening of the cosmic monster, which is a million times the mass of our sun and located 300 million light-years away inside the galaxy SDSS1335+0728,