天体
てんたい · tentai · JLPT N1 · noun
celestial body
🪐⭐ 天 = sky + 体 = body: a body up in the sky, like a star or planet
Pronounced ten-tai. 天 means heaven or sky and 体 means body, so the compound names any star, planet, or moon. Sound it as ten plus tie.
天 — 一 (one/sky) above 大 (big person)
Originally a pictograph of a person (大) with an emphasized head, representing what is above — the sky or heavens. The top stroke evolved into 一, symbolizing the vast expanse overhead. From 'sky' it extended to mean 'day,' 'heaven,' and 'nature.'