quásar

n. quasi-stellar object with a large red shift, distant starlike celestial object that emits massive amounts of radiation (Astronomy)

A quasar (contraction of QUASi-stellAR radio source) is an extremely bright and distant active galactic nucleus. They were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light that were point-like, similar to stars, rather than extended sources similar to galaxies. While there was initially some controversy over the nature of these objects, there is now a scientific consensus that a quasar is a compact halo of matter surrounding the central supermassive black hole of a young galaxy.
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Noun
1. a starlike object that may send out radio waves and other forms of energy; large red shifts imply enormous recession velocities
(synonym) quasi-stellar radio source
(hypernym) celestial body, heavenly body

n. quasar, quasi-stellar object with a large red shift, distant starlike celestial object that emits massive amounts of radiation (Astronomy)

n. quasar, quasi-stellar object with a large red shift, distant starlike celestial object that emits massive amounts of radiation (Astronomy)