Black Holes

Einstein's theory of relativity say black holes are 'bald', but a new tweak to his research may give the mysterious objects their long-sought 'hair.'

Years after ripping stars to shreds, 24 black holes suddenly flared up with radio waves in inexplicable 'burping' bouts. Half of all star-killing black holes may experience the same.

Astronomers have imaged the outskirts of an accretion disk gradually feeding a supermassive black hole for the first time, potentially boosting our understanding of such hungry cosmic monsters.

The 'wobble' of jets blasting out from active galaxies, or blazars, is 'smoking gun' evidence for supermassive black hole binary systems that elude astronomers, a new study reports.

Here's why a black hole crashing into a neutron star belched out an odd gamma-ray burst.

When supermassive black holes barrel toward collision, they can reach speeds of up to 1/10th the speed of light, new research suggests.

Scientists might have found the most massive star to be seen ravaged by a supermassive black hole.

The way in which supermassive black holes grew to tremendous sizes in the early universe has been a mystery for astronomers, but the puzzle could soon be solved.

Knowing that black holes tend to have these masses could help provide a new way of measuring the expansion rate of the universe.

Black holes seem to get all the attention. But what about their mirror twins, white holes? Do they exist? And, if so, where are they?

NANOGrav made the first detection of low-frequency gravitational waves this year. Now, the hunt is on to find the source of these ripples in space — and supermassive black holes are lead suspects.

For the first time, astronomers have spotted small-scale super-fast changes in a jet of super-energetic plasma jet blasting out from a small black hole.

But don't panic — the powerful blazar is located 400 million light-years from Earth.

The name Oppenheimer will always be synonymous with the power and destruction of the atomic bomb, but the physicist also played an essential role in the study of black holes.

Only an extreme environment could hide the collision of two stellar-mass black holes — and feeding supermassive black holes could provide such cover.

Astronomers have witnessed one of the most dramatic "switching on" events ever seen as a distant supermassive black hole began greedily feasting on its surrounding matter.

The James Webb Space Telescope has detected the most distant active supermassive black hole to date, and researchers aren't sure how it could have formed so early in the universe's history.

Time dilation, brought about by the relativistic expansion of space, has resulted in the observed slowing of 'clocks' in the early universe.

Observing time distortions could show whether Einstein's theory of general relativity accounts for the mysteries of dark matter and dark energy.