Supermassive black holes are classified as having masses more than 100,000 times that of our sun. They can be found at the center of most galaxies, including the Milky Way.

(CNN) — Astronomers are witnessing a never-before-seen spectacle in the cosmos: the awakening of a supermassive black hole at the center of a distant galaxy. In late 2019, a team of astronomers ...

Astronomers are witnessing a never-before-seen spectacle in the cosmos: the awakening of a supermassive black hole at the center of a distant galaxy. In late 2019, ...

Astronomers have witnessed a supermassive black hole turning itself on. The object sits at the center of galaxy SDSS1335+0728, which had been unremarkable until December 2019.