Ptolemy

ÕPtolemy (Claudius Ptolemaeus) first start to off was born in Hermiou (Upper Egypt, instead of Lower Egypt) 85AD. He died circa 168AD. Ptolemy was a Astronomer, a Geographer, and a Mathematician. He was taught by Theon which in this biography I'm reading states that he used data off of Theon. Ptolemy used geometric models to predict the positions of the sun, the moon, and the planets. By 1543 Copernicus had proved Ptolemy wrong!

This is Ptolemy's model of the universe. His models of the universe lasted until A.D.1543 because it matched old observations. page1.2.3.4.5.