An illustration of a quasar, powered by an accretion disk of gas and dust swirling into a central supermassive black hole.

Quasars are some of the brightest objects in the universe. A quasar is powered by large amounts of matter falling into the supermassive black hole at the center of a galaxy. Collisions and mergers ...

Quasars are found throughout the Universe, but quasar pairs are rare. “We estimate that in the distant universe, for every 1,000 quasars, there is one double quasar. So finding these double quasars is ...

This artist’s impression shows the record-breaking quasar J059-4351, the bright core of a distant galaxy that is powered by a supermassive black hole. The most luminous object in the universe ever ...

An international team of astronomers reports the discovery of a new hyperluminous quasar. The newfound quasar, which received the designation eFEDSJ0828–0139, has a high star-formation rate and its ...

A Yale-led team of astronomers has detected an intensely brightening and dimming quasar that may help explain how some objects in the early universe grew at a highly accelerated rate. The discovery, ...