Rights groups are increasingly worried that El Salvador's notorious CECOT prison is becoming a "black hole" for the United ...

Estrella del Paso, a local nonprofit that helps migrants with legal services, terminated two of its programs following a ...

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

In the realm of general relativity, black holes are well-known for their ability to trap light and matter by bending ...

ANDREWS REPLIES: To answer Scott: If Planet Nine is discovered, I’m confident a probe would eventually be sent to it! But after launch it might take decades for a spacecraft to reach that destination, ...

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 ...

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

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

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

Researchers made a fascinating discovery at the heart of our galaxy: "strange filaments" driving a cycle of gas emissions and replenishment.

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