Researchers spotted a second distant star orbiting a well-known black hole and its stellar companion in a never-before-seen ...

Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from ...

Astronomers have stumbled upon something truly remarkable: a black hole that's not just part of a binary system, but part of ...

There's evidence out there for the supernova model of black hole formation. This is when a dying star erupts in a colossal ...

Many black holes detected to date appear to be part of a pair. These binary systems comprise a black hole and a secondary ...

Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from a pair of monster black holes disrupting a cloud of gas in the center of a ...

A third, tenuously held companion to the known binary V404 Cygni may signal that at least some black holes form "gently." ...

When pulsars accrete too much material, they can form black holes. Spider pulsars don't tempt the same fate. Vidal calls ...

"Overall, it's not surprising that black holes should be in triples, but what's surprising is that this system held onto the outer star after forming the black hole." ...

Black holes have previously been spotted orbiting with one other star or one other black hole in what are called binary ...

When black holes merge, what happens inside of them is anybody's guess. Black hole mergers are beautiful — and some of the most violent events in the cosmos. Here's how the process unfolds.

Black holes have only been spotted on their own or in a binary until this discovery, with a single star, neutron star or other black hole companion orbiting tightly around them. Now, according to ...