A team of astronomers at the Space Telescope Science Institute, working with one colleague from the University of St Andrews' ...

V404 Cygni, one of the first confirmed black holes, is actually part of a triple star system, a surprising configuration that ...

A supermassive black hole dormant for decades has just awakened in a distant galaxy. This sudden activation provides a unique ...

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

The quasi-periodic eruptions of X-rays from a black hole 300 million light-years away are unlike any researchers have ever ...

A distant galaxy that lay quiet for decades has suddenly stirred, lighting up in dramatic bursts that have caught astronomers ...

A supermassive black hole that scientists have nicknamed "Ansky" is now awake after a long dormant period, emitting powerful ...