(astronomy) An extragalactic object, starlike in appearance, that is among the most luminous and (putatively) the most distant objects in the universe.

plural of quasar

(astronomy) A pair of quasars which gravitationally interact with each other, unlike a standard double quasar, which does not interact.

plural of binary quasar

plural of double quasar

plural of twin quasar

(astronomy) Two quasars that form a system, such that they gravitationally interact, or are part of the same cluster of galaxies; a binary quasar.

(astronomy) a pair of quasar images formed by gravitational lensing of a single physical quasar

(astronomy) a quasar embedded in a double-lobed radio source, similar to a radio galaxy, whereby the quasar replaces a non-quasar galaxy, where the radio source extends over 1Mpc.

plural of giant quasar