天体物理 tiāntǐwùlǐ astrophysics Origin Definitions Defs Strokes Stroke Words Sentences Sents 天体 天體 tiāntǐ noun celestial body General term for objects in the universe, including stars, planets, satellites, comets, meteors, and cosmic dust物理 wùlǐ noun physics The science that studies the laws of matter and motion; abbreviation for 物理学 wùlǐxué