Assertion: quasar's hole | /r/HasSubevent | active galactic nucleus
Facets:
Source sentences:
text: At the core, most galaxies have a supermassive black hole, which may result in an active galactic nucleus.
text: At the core, most galaxies have a supermassive black hole, which may result in an active galactic nucleus.
text: At the core, most galaxies have a supermassive black hole, which may result in an active galactic nucleus.
text: At the core, most galaxies have a supermassive black hole, which may result in an active galactic nucleus.