Assertion: supernova | /r/HasProperty | observed
Facets:
value: nearby
type: LOCATION
Source sentences:
text: Important as they are, few supernovae have been observed nearby.
text: Important as they are, few supernovae have been observed nearby.
text: The earliest supernova to be observed occurred in 185 AD.
text: When a supernova is observed, it can be categorized in the Minkowski–Zwicky supernova classification scheme based upon the absorption lines that appear in its spectrum.