Assertion: quasar | /r/HasProperty | termed quasar pair
Facets:
value: as a "binary quasar"
type: OTHER
Source sentences:
text: When the two are also close together in space (i.e. observed to have similar redshifts), they are termed a "quasar pair", or as a "binary quasar" if they are close enough that their host galaxies are likely to be physically interacting.