Claudius Ptolemy was a Greek mathematician, astronomer and geographer who lived in the Egyptian city of Alexandria while under the rule of the Roman Empire. Much of medieval astronomy and ...

Greek astronomer Claudius Ptolemy, who lived in Egypt, built upon Babylonian knowledge in his geocentric model of the ...

5. Philosophy Exploring the Ancient Greek contribution to philosophy, maths, astronomy, medicine - and more. 6. Story, story, story A song referencing many of the best-known myths and stories of ...