The black holes are closer to Earth, and to each other, than any other known supermassive black hole pair.
The accelerating expansion of the universe could be affecting the size of black holes, according to a team of…
Palomar 5 is being gravitationally stripped away, with only its most massive residents left behind.
The massive collisions occurred a billion years ago, sending out ripples in spacetime that eventually reached Earth.
On August 30, 1995, 10-billion-year-old light from the early universe finally hit the Compton Gamma-ray Observatory,…
In April 2019, the world was spellbound, if only for a moment, by an ominous void encircled by a half-halo of light.…
Some 230 million light-years from Earth, there’s a black hole going places. These extraordinarily dense objects are u…
About 7,800 light-years away—within our galactic neighborhood—is globular cluster NGC 6397, basically a wad of stars…
On the night of November 23, 2014, a powerful telescope on Mauna Kea in Hawaii was trying to pick out the enigmatic…
When the universe was a fledgling billion years old, a galaxy spewed a ginormous, fast-moving jet of radiation and…
A star 215 million light-years away has been obliterated by a supermassive black hole, making it the closest…
A remote structure consisting of a supermassive black hole, several primordial galaxies, and copious amounts of gas…
Scientists are learning important new things about the first-ever directly imaged black hole, including behaviors…
There’s a cloudy patch of space inside our galaxy that unexpectedly produces gamma radiation at clockwork-like…
Two years ago, astronomers watched in confusion as the corona of a supermassive black hole quickly faded from view,…
You may have heard about Planet Nine—a hypothetical planet thought to exist in the outer reaches of the solar…
An unusually bright star has gone missing, in a mystery of cosmic proportions.
Black holes aren’t supposed to leak any light when they smash into each other—or at least that’s what physicists…
Astronomers are puzzling over observations that show a black hole smashing into a mystery object of unusual size.
This black hole—if that’s really what it is—is so close to Earth that you can see its star system without a…