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

Astronomers using the James Webb Space Telescope have found compelling evidence of a supermassive black hole at the heart of the Messier 83 galaxy. Webb's Mid-Infrared Instrument detected highly ...

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 ...