Description

Claudius Ptolemy, a Roman citizen of Egypt, authors his Almagest, a mathematical and astronomical treatise on the geocentric model called also Ptolemaic system

Location

Roman Empire

Rate

Very important (8)

Sphere

Science

Quotations

In brief, all the observed order of the increases and decreases of day and night would be thrown into utter confusion if the earth were not in the middle. And there would be added the fact that the eclipses of the moon could not take place for all parts of the heavens by a diametrical opposition to the sun, for the earth would often not be interposed between them in their diametrical oppositions, but at distances less than a semicircle.

Almagest by Ptolemy

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