xīn​xīng

nova

新星 xīn​xīng
nova noun
a star that suddenly increases in brightness and then gradually returns to its original state

Astronomers observed a nova that suddenly erupted.

rising star noun
a person who is quickly becoming successful or famous

She is a rising star in the film industry.

Frequency

Movie subtitles
2.59 per million appears in 1% of films
Written text
4.48 per million

Sources

Definitions
CC-CEDICT