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

A massive black hole at the heart of a galaxy in the Virgo constellation is waking up, shooting out intense X-ray flares at ...

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

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

Learn how astronomers found the invisible ionized gas that forms puffy halos surrounding galaxies.

Approximately 980 million light-years away from Earth, in the center of the galaxy SDSS1335+0728 in the constellation Virgo, ...

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

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

The black hole at the heart of galaxy SDSS1335+0728, located 300 million light-years away, was quiet for decades as it ...

The Event Horizon Telescope captured the first image of the Milky Way galaxy's supermassive black hole Sagittarius A* — our galaxy's "black hole heart." Credit: ESO ...

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

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 ...