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Use "novae" in a sentence
"These assumptions would rule out some of the prime suspects in the mystery: comets, brightening stars known as novae, and exploding stars known as supernovae."
"In the conventional view of sf/fantasy, a distinction is usually made between the two forms as fictions of the possible and the impossible respectively, but this is a distinction which glosses over the temporal (technological and historical) impossibilities of "novae" (Darko Suvin's term for the hypothetical novelties of sf) and "errata" (my own term for the counterfactual alterations of alt-history)."
"Astronomers commonly observe intense flashes of light from a variety of stellar explosions and outbursts, such as novae and supernovae."