Assertion: recorded supernova | /r/HasProperty | recorded by unknown indian observers
Facets:
value: in 4500±1000 bc
type: TEMPORAL
Source sentences:
text: The earliest possible recorded supernova, known as HB9, could have been viewed and recorded by unknown Indian observers in 4500±1000 BC.
text: The earliest possible recorded supernova, known as HB9, could have been viewed and recorded by unknown Indian observers in 4500±1000 BC.