Note:  Do not rely on this information. It is very old.


Cleomedes, a Greek astronomer as to whose life and era nothing certain is known, but he cannot have flourished before the close of the first century B.C. He wrote a very remarkable treatise on The Circular Theory of the Heavenly Bodies, in which many later discoveries are anticipated, such as the sphericity of the earth, the refraction of light, and the central position of the sun in the solar system.