Take a journey to 89 million light-years away from Earth to the NGC 7727 galaxy. It harbors the closest pair of supermassive ...

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