Assertion: supernova | /r/HasProperty | discovered
Facets:
Source sentences:
text: Supernovae were discovered long before astronomers realized that these spectacular cataclysms mark the death of stars (see Supernovae in History).
text: The most recent supernova in our galaxy has been discovered by tracking the rapid expansion of its remains.
text: Supernovae were discovered long before astronomers realized that these spectacular cataclysms mark the death of stars (see Supernovae in History).
text: ’s light curve, which occurred within the first few days of observation, would have been missed if the supernova had been discovered later.