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 ...

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

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

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 ...

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 ...

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

According to the research shared at the 245th meeting of the American Astronomical Society in National Harbor, Maryland, the ...

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

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

A strange black hole is making scientists scratch their heads. The distant object, dubbed "1ES 1927+654" and packing the mass ...

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

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