An imaginary sphere with Earth at its center. The stars, planets, Sun, Moon, and other celestial bodies appear to be located on this sphere, and the sphere appears to rotate around the Earth's extended axis once every 24 hours, carrying the celestial bodies with it overhead and giving them their diurnal motions. The celestial sphere is essentially a spherical map of the sky that provides the basis for the coordinate systems used in celestial navigation and in specifying the positions and motions of celestial objects.
A celestial body, such as a planet or star.
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
(Archaic) The vault of heaven, the sky, or the upper air
Among Christian poets, the abode of God
Find another word for celestial-sphere. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for celestial-sphere, like: altazimuth coordinate system ecliptic coordinate system equatorial coordinate system, sphere, firmament, heavens, vault of heaven, welkin and empyrean.