late 14c., "pertaining to heaven," from Old French celestial "celestial, heavenly, sky-blue," from Latin caelestis "heavenly, pertaining to the sky," from caelum "heaven, sky; abode of the gods; climate," which is of uncertain origin; perhaps from PIE *kaid-slo-, perhaps from a root also found in Germanic and Baltic meaning "bright, clear" (compare Lithuanian skaidrus "shining, clear;" Old English hador, German heiter "clear, shining, cloudless," Old Norse heið "clear sky").
The Latin word is the source of the usual word for "sky" in most of the Romance languages, such as French ciel, Spanish cielo, Italian cielo. General sense of "heavenly, very delightful" in English is from early 15c.
3. In the process of their careful watching and recording the celestial movements the Chinese provided valuable and interesting information for succeeding generations.
古代中国人在仔细观察、认真记录天体运动的过程里，为后代留下了宝贵而又有趣的资料。
来自柯林斯例句
4. Gravity governs the motions of celestial bodies.
万有引力控制着天体的运动。
来自辞典例句
5. Celestial poles are situated directly over the earth's geographical poles.