retrograde motion

Ptolemy – Roman astronomy – history of science
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Ptolemy – Roman astronomy – history of science

Romans, Science

4 09, 2017

Ptolemy – Roman astronomy – history of science

By Karen Carr|2018-04-11T09:22:19-07:00September 4th, 2017|Romans, Science|Comments Off on Ptolemy – Roman astronomy – history of science

A copy of Ptolemy's map of the world Ptolemy was born in Egypt in about 90 AD, when the Romans were ruling Egypt. He was a Roman citizen. Probably he was the son or grandson of [...]

Medieval astronomy in Europe
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Medieval astronomy in Europe

Medieval, Science

4 08, 2017

Medieval astronomy in Europe

By Karen Carr|2018-04-24T08:21:21-07:00August 4th, 2017|Medieval, Science|Comments Off on Medieval astronomy in Europe

Astrolabe in Hebrew, probably from Spain (1300s AD) In the early Middle Ages, most people in Europe were too poor to have much time for astronomy. But some people were still interested in [...]