A stronomers have detected the signal of a colossal black hole in deep space that likely formed when two already-large black ...

At the core of the galaxy, about 26,000 light-years away in space, is Sagittarius A*, a supermassive black hole about 4 ...

Scientists working to study black holes use specific radio frequencies to track black holes, the same frequencies often used ...

A rogue, middle-mass black hole has been spotted disrupting an orbiting star in the halo of a distant galaxy, and it's all ...

Traditionally thought to go silent after a brief flare of activity, some black holes are now being observed emitting new ...

Black holes are one of the most fascinating and mysterious phenomena in the universe. These cosmic giants have such immense ...

The object, named NGC 6099 HLX-1, first appeared in 2009. Chandra caught the bright X-ray flash near the galaxy’s outskirts.

NASA's Hubble Space Telescope and NASA's Chandra X-ray Observatory have teamed up to identify a new possible example of a ...

The largest black hole collision ever recorded has scientists' jaws on the floor — and scratching their heads.

Maximiliano Isi was a graduate student at the California Institute of Technology in 2014, when scientists there first ...

“This rare event provides an opportunity for astronomers to observe a black hole’s behavior in real time, using X-ray space telescopes XMM-Newton and NASA’s NICER, Chandra and Swift,” said Dr. Lorena ...

UC Berkeley astronomers discovered a rogue black hole devouring a star 2,600 lightyears from its galaxy's core — the first optical detection of such an event.