Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole

NASA's Chandra and NuSTAR telescopes have teamed up to study a supermassive black hole-powered quasar that could have played a key role in ending the cosmic dark ages.

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

Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes, enormous amounts of energy are released, making active galactic nuclei, or AGN,

MIT astronomers have been captivated by the strange behaviors of a supermassive black located 270 million light-years away, which mysteriously lost and then regained its corona in 2018. Recently, it e

A mysterious black hole has started behaving even more strangely, scientists have said. The supermassive black hole has been sending out flashes that have increased in speed. The black hole is known as 1ES 1927+654,

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes what we know about the early universe.

A supermassive black hole in a distant galaxy is once again surprising scientists. In 2018, a black hole called 1ES 1927+654, located about 270 million light-years away from Earth, showed its first signs of mysterious behavior.

Astronomers have identified a rare cosmic phenomenon: a supermassive black hole, known as J0410−0139, located 12.9 billion light-years from Earth. This black hole, with a mass equivalent to 700 million suns,