A recent astronomical discovery is revolutionizing our understanding of spiral galaxies. A giant spiral galaxy, located ...

"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.

Einstein believed that black holes didn't really exist. But they do: that much we know. We don't know much else about them.

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

We all know that black holes can devour stars, rip them apart and consume their remnants. But that only happens if a star ...

A Michigan State University researcher saw X-rays coming from a black hole using the NASA Chandra X-Ray Observatory telescope ...

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

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

A distant massive black hole erupted to life, releasing record-breaking X-ray flares in a stunning cosmic event.

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

Black holes power some of the most energetic phenomena in the known universe, but could they ever power an advanced human ...