Assertion: pulsar | /r/HasProperty | discovered in late 1967
Facets:
value: by graduate student jocelyn bell burnell
type: OTHER
value: as radio sources
type: MANNER
Source sentences:
text: Pulsars were discovered in late 1967 by graduate student Jocelyn Bell Burnell as radio sources that blink on and off at a constant frequency.
text: Pulsars were discovered in late 1967 by graduate student Jocelyn Bell Burnell as radio sources that blink on and off at a constant frequency.