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

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 ...

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 ...

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