Assertion: pulsar | /r/HasProperty | close
Facets:
value: together
type: MANNER
value: very
type: DEGREE
Source sentences:
text: Letters are used to distinguish pulsars that are close together (such as in the double pulsar system, or in globular clusters).
text: Pulsars that are very close together sometimes have letters appended (e.g. PSR 0021-72C and PSR 0021-72D).