noun
nova
Astronomical term for a star that suddenly becomes much brighter and then fades.
See also: ノバ
昨夜、新星が観測された。
A nova was observed last night.
noun
rising star; new face
Figurative use for a person who has recently become famous or prominent in a field.
彼女は演劇界の新星だ。
She is a rising star in the theater world.