A pair of quasars that existed when the universe was only 3 billion years old has been spotted by the Hubble Space Telescope.

Astronomers have discovered an enormous radio jet stretching over 200,000 light-years from a quasar in the early universe, ...

The image captures HE0435-1223, one of the best lensed quasars, with four bright images formed by a foreground galaxy. This gravitational lensing effect creates a stunning celestial arrangement. The ...