The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

A large international team of scientists observed a rare event in real time: a dramatic increase in radio emission and the ...

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 ...

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

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

According to the research shared at the 245th meeting of the American Astronomical Society in National Harbor, Maryland, the observed X-ray oscillations are believed to originate from a compact white ...

Astronomers have observed strange behaviors in a distant black hole. Plasma jets are moving fast, and X-ray flashes are ...

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

A distant supermassive black hole, the mysterious 1ES 1927+654, emits X-ray pulses unlike anything previously recorded, which ...

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

It appears this white dwarf is not making a death plunge but rather has stabilized its orbit around the black hole ...