Assertion: quasar | /r/Synonym | qso
Facets:
value: more recently
type: TEMPORAL
Source sentences:
text: A quasar (more recently known as a QSO, Quasi-Stellar Object) is a distant star-sized energy source in space with an excess of ultraviolet radiation.
text: A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).