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 ...

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

The weird outbursts of a distant supermassive black hole may be caused by a death-defying white dwarf walking a cosmic tight ...

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 ...

A large international team of scientists has observed a phenomenon that astronomers didn't ever expect to see happen in real ...

A strange black hole is making scientists scratch their heads.

The observations revealed features never before seen in real time around a supermassive black hole. Among them was the launch ...

Black holes themselves emit no light, but the supermassive black holes at the centers of galaxies are often surrounded by ...

MIT astronomers observed flashes of X-rays coming from a supermassive black hole at a steadily increasing clip. The source could be the core of a dead star that’s teetering at the black hole’s edge.

Active galaxy 1ES 1927+654, circled, has exhibited extraordinary changes since 2018, when a major outburst occurred in visible, ultraviolet, and X-ray light. The galaxy harbors a central black hole ...

International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected ...

Astronomers detected X-ray flashes from the black hole that increased in frequency from one every 18 minutes to one every seven minutes.