You searched for: “celestial sphere
celestial sphere (s) (noun), celestial spheres (pl)
1. The imaginary orbit around the Earth: The sun, moon, stars, and planets appear to be placed on the celestial sphere.
2. The imaginary shell formed by the sky: The celestial sphere is usually, represented as an infinite circle, the center of which is the observer's position.
This entry is located in the following units: -al; -ial, -eal (page 12) celest- (page 1) sphero-, spher-, -sphere- (page 6)
Word Entries at Get Words: “celestial sphere
celestial sphere
1. The imaginary sphere surrounding the earth, with the stars and other astronomical objects attached to it.
2. An imaginary sphere on the inside of which the celestial bodies seem to lie.

The positions of bodies; such as, stars, planets, and galaxies are specified by their coordinates on the celestial sphere.

This entry is located in the following unit: Astronomy and related astronomical terms (page 6)