| 单词 | celestial poles |
| 释义 | celestial /si-lestˈyəl/adjective
ORIGIN: Through Fr from L caelestis, from caelum heaven celestˈially adverb Celestial Empire noun (historical) China, the Chinese Empire celestial equator noun (astronomy) A great circle in which the plane of the earth's equator cuts the celestial sphere celestial globe noun A model of the celestial sphere showing the relative positions of stars, etc celestial horizon see horizon celestial latitude see latitude celestial longitude see longitude celestial mechanics singular noun (astronomy) The study of the motions of celestial objects in gravitational fields, esp, as by Newton, satellite and planetary motion in the solar system celestial navigation noun Navigation by the stars, etc (also astronavigation) celestial poles plural noun (astronomy) The two points at which the earth's axis, extended indefinitely, cuts the celestial sphere celestial sphere noun (astronomy) An imaginary sphere of infinite radius, of which the observer is the centre, onto which stars and other celestial bodies are projected |
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