異い星せい

noun

different planet; another planet; alien world

Refers to a planet other than Earth, often in science fiction or speculative contexts. Commonly used in compounds like 異星人 (alien being).

• 彼かれは異い星せいの風ふう景けいを想そう像ぞうして絵えを描かいた。

  He painted a picture imagining the landscape of an alien planet.

• SF小しょう説せつでは、異い星せいの文ぶん明めいがよく登とう場じょうする。

  In science fiction novels, civilizations from other planets often appear.