Assertion: quasar | /r/Synonym | quasi-stellar object
Facets:
Source sentences:
text: A quasar ( ) (also known as a quasi-stellar object abbreviated QSO) is an extremely luminous active galactic nucleus (AGN), in which a supermassive black hole with mass ranging from millions to billions of times the mass of the Sun is surrounded by a gaseous accretion disk.
text: Quasars (quasi-stellar objects) are the most luminous single objects we know in the Universe.
text: Quasars (Quasi-stellar radio source) emit billions  or even trillions  times the energy of a star in our galaxy, the Sun.
text: A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).