celestial navigation | Hain Celestial Group | Celestial | The Celestial Zone | The Celestial Toymaker | Heavenly Spheres | Celestial stem | Celestial navigation | Celestial Movies | Celestial Mechanics and Dynamical Astronomy | Celestial (Isis album) | Celestial Church of Christ | celestial |
The cosmological model of concentric or homocentric spheres, developed by Eudoxus, Callippus, and Aristotle, employed celestial spheres all of which had the same center, the Earth.