space alien; extraterrestrial being
Refers to intelligent beings from outer space, commonly used in science fiction and popular culture.
Do space aliens really exist?
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').