A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could ...

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 ...

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

Astronomers have identified a rare cosmic phenomenon: a supermassive black hole, known as J0410−0139, located 12.9 billion ...

"For such a faint and unknown target, we were not sure if we would get any data at all — but the strategy worked." ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again ...

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

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 ...

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 ...

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