A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be?

A strange black hole is making scientists scratch their heads. The distant object, dubbed "1ES 1927+654" and packing the mass of 1 million suns, previously stunned astronomers when its corona ...

Supermassive black holes are seen as sources of wanton cosmic destruction, but there may be more to their powerful influence ...

playing a game of peek-a-boo with an orbiting spacecraft through a strangely shaped hole in the clouds. Vesuvius is a 4,203-foot-tall (1,281 meters) stratovolcano located next to the city of ...