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 ...

Astronomers have 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 is the most distant ...

Observations from Gemini Observatory identify a key fingerprint of an extremely distant quasar, allowing astronomers to sample light emitted from the dawn of time. Astronomers happened upon this deep ...