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

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

After years of observation, researchers concluded that the sudden changes in the galaxy were likely caused by its black hole ...

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

The European Space Agency's XMM-Newton is playing a crucial role in investigating the longest and most energetic bursts of ...