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

"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...

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." ...

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.

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

Feeding supermassive black holes are more common in the cosmos than previously suspected. What could possibly hide such ...

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

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