A supermassive black hole, which remained previously inactive, was seen erupting with the longest and most powerful X-ray ...

Learn why a black hole is becoming active and why experts still can't explain the source of its regular, periodic pattern of ...

Astronomers are investigating the longest and most energetic bursts of X-rays seen from a newly awakened black hole. Watching this strange behavior unfold in real time offers a unique opportunity to ...

Researchers have spent the past few years watching a black hole re-awaken roughly 300 million light-years away from Earth.

"This rare event provides an opportunity for astronomers to observe a black hole's behavior in real time," said astronomer ...

Scientists have observed a previously inactive supermassive black hole producing regular, powerful X-ray eruptions that ...

Ansky was first seen erupting in 2019, with bursts of X-ray light from February 2024. These repeated at almost regular ...

Astronomers have used space-based telescopes, including NASA's Swift X-ray observatory, to watch a monster black hole spring ...

Although we know that supermassive black holes (millions of times the mass of our sun) lurk at the center of most galaxies, ...

Nov. 13, 2024 — Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal from a pair of monster black holes disrupting a cloud of ...

The researchers confirmed that two enormous stars, each more than 20 times the mass of the sun, are growing inside ...

Webb first observed the region called Sagittarius C in 2023. Now researchers are now using those observations to study star formation in the wider area around the center of the Milky Way, known as the ...