OJ 287 is approximately 5 billion light-years away from us, in the constellation Cancer. It shines with great luminosity, as do other quasars, because a black hole at the center of the quasar eats gas ...

Astronomers have captured a radio image showing two black holes orbiting each other for the first time, just six years after the release of the first-ever photo of a single black hole. The discovery ...

Astronomers had long suspected that certain quasars—those brilliant, otherworldly light sources fueled by supermassive black holes—could harbor two black holes rather than one. That theory, long ...