A supermassive black hole in the spiral galaxy NGC 3783 just delivered an X-ray surprise that astronomers have never watched ...

When a supermassive black hole in a nearby galaxy suddenly brightened in X-rays, astronomers watched it do something they had never seen before: within hours, the flare appeared to ignite winds racing ...

Supermassive black holes are some of the most powerful engines in the universe. These giants sit at the centers of galaxies, including your own Milky Way, and sometimes become active by pulling in ...