Assertion: quasar's hole | /r/LocatedNear | an accretion disk of gas
Facets:
Source sentences:
text: Quasar: A quasar is an active galactic nucleus which consists of a super-massive black hole surrounded by an accretion disk of gas.
text: Quasar: A quasar is an active galactic nucleus which consists of a super-massive black hole surrounded by an accretion disk of gas.