In a galaxy 300 million light-years away from Earth, a once-quiet black hole has woken up. Astronomers became aware of this galaxy in the Virgo constellation when it abruptly began to light up in ...

These efforts have helped researchers understand the behavior of black holes, the densest objects in the universe where even light cannot escape. Black holes are simpler than you might think.

Another idea, first proposed by respected physicist and mathematician Roger Penrose, is that we could extract energy from rotating black holes, also known as Kerr black holes, after Roy Kerr ...

Accelerating x-ray flashes could come from the core of a dead star teetering near the event horizon. In 2018 astronomers at MIT and elsewhere observed previously unseen behavior from a black hole ...