Learn why a black hole is becoming active and why experts still can't explain the source of its regular, periodic pattern of ...

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

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

Scientists have observed a previously inactive supermassive black hole producing regular, powerful X-ray eruptions that ...

The black hole at the heart of galaxy SDSS1335+0728, located 300 million light-years away, was quiet for decades as it consumed little matter and was in a dormant state. But recently it suddenly lit ...

Astronomer Charles Steinhardt said most stars we see "might have formed under different conditions than we previously believed." ...

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." ...

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

Astronomers have reached deeper into the heart of a brilliant cosmic engine than ever before, using NASA’s Hubble Space ...

Black holes are fundamental to the structure of galaxies and critical in our understanding of gravity, space, and time. A ...

Nicknamed the “Big Wheel,” a giant, spiral-shaped disk galaxy was spotted in an unusually crowded part of the early universe just two billion years after the big bang ...