noun🔗Share新星 Any sudden brightening of a previously inconspicuous star.""Astronomers were excited to observe a nova appear suddenly in the night sky, where previously there had only been a faint star." "天文学家们非常激动地观测到一颗新星突然出现在夜空中,那里之前只有一颗非常暗淡的星星。astronomyspacesciencephenomenaChat with AIVocabulary GamePractice Reading