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Quick Answer. The four spheres of the Earth are the atmosphere, the biosphere, the hydrosphere and the lithosphere. Each of these spheres is considered by scientists as interconnected in a greater geosphere that harbors all terrestrial life and materials.
celestial sphere. 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.