Claudius Ptolemy, Greek mathematician and astronomer

Claudius Ptolemy was a 2nd century Greek mathematician, astronomer and geographer famous for his controversial geocentric theory of the universe, which would form the basis of our understanding of the motions of stars and planets for over than a thousand years.

Ptolemy, Alexandria Observatory, 2nd Century - Stock Image - F033/2704 - Science Photo Library

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Ptolemy - Wikipedia

Ptolemy, Accomplishments, Biography, & Facts

Claudius Ptolemaeus Astronomer & Mathematician Presented By:  Daniel Ramirez  Daisy Garcia  Jessica Caballero  Heladio Rosales  Alessandro Crinzi. - ppt download

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Ptolemy - Wikipedia

ISAW Director Alexander Jones Collaborates to Reveal Lost Astronomical Treatise by Claudius Ptolemy — Institute for the Study of the Ancient World

Claudius Ptolemaeus, Greek astronomer - Stock Image - C008/9317 - Science Photo Library