Ptolemy

Ptolemy

Claudius Ptolemy (; Koinē Greek: Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos [kláwdios ptolɛmɛ́os]; Latin: Claudius Ptolemaeus; c. 100 – c. 170) was a Greek mathematician, astronomer, geographer and astrologer. He lived in the city of Alexandria in the Roman province of Egypt under the rule of the Roman Empire, had a Latin name (which several historians have taken to imply he was also a Roman citizen), cited Greek philosophers, and used Babylonian observations and Babylonian lunar theory. The 14th century astronomer Theodore Meliteniotes gave his birthplace as the prominent Greek city Ptolemais Hermiou (Πτολεμαΐς ‘Ερμείου) in the Thebaid (Θηβᾱΐς). Read more on Wikipedia

Since 2007, the English Wikipedia page of Ptolemy has received more than 3,332,890 page views. His biography is available in 107 different languages on Wikipedia making him the 5th most popular astronomer.