How to Say "space alien" in Spanish
The Spanish word for “space alien” is “extraterrestre” — B1 level.

Examples
Mi hermano dice que vio un extraterrestre cerca del bosque.
My brother says he saw an alien near the forest.
La película trata sobre un grupo de extraterrestres que invaden la Tierra.
The movie is about a group of aliens who invade Earth.
Gender Stays the Same
This noun is special because its ending never changes, regardless of the person's biological gender. You use 'el' (for a male alien) and 'la' (for a female alien), but the word itself is always 'extraterrestre'.
Confusing Noun and Adjective
Mistake: “Usar 'un vida extraterrestre' (mixing up noun and adjective forms).”
Correction: Use 'un extraterrestre' (the being) or 'vida extraterrestre' (the adjective). They look the same but play different roles.
Related Translations
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