Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...

Nick Hague and Suni Williams spent six hours working on NICER, AMS and other equipment outside the International Space ...

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 ...

In December 2022, less than six months after commencing science operations, NASA's James Webb Space Telescope revealed ...

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.

Researchers found far more hidden black holes than previously known, indicating plenty of behemoths lurking in thick clouds ...

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

Scientists want to know if a tidal disruption event that exploded twice is the result of a star abandoning its binary partner ...

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