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

"This pushes our models to their limits and challenges our existing ideas about how these X-ray flashes are being generated." ...

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

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

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

Black holes are fundamental to the structure of galaxies and critical in our understanding of gravity, space, and time. A ...

Black holes are one of the mysteries of the universe where all the laws of nature as we know them stop working.

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 ...

The black hole at the heart of galaxy SDSS1335+0728, located 300 million light-years away, was quiet for decades as it consumed little matter and was in a dormant state. But recently it suddenly lit ...

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

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

This galaxy's central black hole appears to be a "messy eater" as its interstellar scraps are strewn into space.