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

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

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

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

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

So it's this thick ring of material around the black hole instead of being this flat disk." Scientists have been studying black holes since Albert Einstein first predicted their existence over 100 ...

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

Astrophysicists have teased a hellish potential future in which life on Earth is extinguished by deadly radiation from the ...

PORTLAND, Ore. (KATU) — There are plenty of weird things floating around in space and black holes may be the weirdest. They’ve certainly sparked and stretched our imaginations, even in popular ...

They are supposed to be black holes the size of elementary particles. They may have been created in the early stages of the Big Bang, when there was a lot of loose energy floating around.