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

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

CCTV (closed-circuit television) of Conor McGregor and Nikita Hand would be used selectively and disseminated in the "dark ...

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

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

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

Since 2018, we've seen 1ES 1927+654 generate jets in real time and found it may have a lone white dwarf orbiting near the ...

All outdoor adventurers should have one or two big and rugged duffel bags in their gear closet—ideally stuffed with outdoor ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023. At that ...