The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...

NASA's Chandra and NuSTAR telescopes have teamed up to study a supermassive black hole-powered quasar that could have played ...

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

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

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." ...

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

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

A strange black hole is making scientists scratch their heads.

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

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

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