space alien; extraterrestrial being
Refers to intelligent beings from outer space, commonly used in science fiction and popular culture.
宇宙人は本当に存在するのだろうか。
Do space aliens really exist?
その映画には友好的な宇宙人が登場する。
Friendly aliens appear in that movie.
地球人 refers to a native of Earth, while 宇�上人 (an alien) refers to a being from another planet, making them direct opposites in science-fiction contexts.
Compound of 宇宙 (uchuu, 'universe, space') and 人 (jin, 'person').