QUASAR

Quasar

A quasi-stellar radio source is a very energetic and distant active galactic nucleus. Quasars are extremely luminous and 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.

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quasar

Noun

  1. An extragalactic object, starlike in appearance, that is among the most luminous and thought to be the most distant objects in the universe.


The above text is a snippet from Wiktionary: quasar
and as such is available under the Creative Commons Attribution/Share-Alike License.

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