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

"This is how you solve the universe-breaking problem." ...

The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary ...

"If our eyes were able to detect X-rays, the sky would be full of dots. And every single one of those dots would be an ...

One supermassive black hole has kept astronomers glued to their scopes for the last several years. First came a surprise ...

Black hole quantum effects are usually thought to be too small to have any observable signatures. This is indeed the case for ...

Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...

Regular pulses of X-ray radiation emanating from a supermassive black hole could be explained by a white dwarf star on the ...

Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the ...

A strange black hole is making scientists scratch their heads.

Multiple NASA telescopes recently helped scientists search the sky for supermassive black holes—those up to billions of times ...

A mysterious black hole has started behaving even more strangely, scientists have said. The supermassive black hole has been ...