A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could ...

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...

A remarkable black hole, located 270 million light-years away in the Draco constellation, has become the center of ...

A strange black hole is making scientists scratch their heads.

Galactic nuclei images reveal how supermassive black holes interact with their surroundings using infrared telescopes.

Astronomers detected X-ray flashes from the black hole that increased in frequency from one every 18 minutes to one every ...

MIT astronomers have been captivated by the strange behaviors of a supermassive black located 270 million light-years away, ...

The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.

Supermassive black holes with powerful jets of high-energy particles, pointing directly at Earth are called blazars.

Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...