A herd of African elephants instinctively formed an "alert circle" to protect the younger elephants at the San Diego Zoo Safari Park as a 5.2-magnitude earthquake shook Southern California on Monday.

The quasi-periodic eruptions of X-rays from a black hole 300 million light-years away are unlike any researchers have ever ...

After years of observation, researchers concluded that the sudden changes in the galaxy were likely caused by its black hole ...

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

Ansky, a once-dormant black hole, is now emitting powerful X-ray bursts, giving scientists a rare chance to study its ...

A mysterious black hole in a distant galaxy just woke up after decades of silence—and it’s putting on a cosmic light show! ESA’s XMM-Newton and other X-ray telescopes are capturing massive bursts of ...

This offered a unique opportunity: It became possible to monitor a feasting and erupting supermassive black hole in real time. "The bursts of X-rays from Ansky are ten times longer and ten times ...

But since 2024, that black hole the astronomers nicknamed “Ansky” started producing X-ray bursts at regular intervals — almost as if Ansky was stretching, then going back to sleep for a bit, according ...

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

A distant galaxy that lay quiet for decades has suddenly stirred, lighting up in dramatic bursts that have caught astronomers ...

This artist’s impression illustrates the mechanism that could be at the origin of the powerful bursts of X-ray light seen from a newly awakened black hole named Ansky. ESA; ACKNOWLEDGEMENTS ...