Episode 33: January 27th 2010 : Ptolemy’s Almagest
If you had the task of gathering all of humanity’s knowledge of cosmology in one place, how would you do it? Answers to questions such as, How big is the Earth? At what date and time will the Moon be full again? What makes the Sun shine? How old is the Universe? Today a good place to start the project would be to scour the sources online. In about 150AD Claudius Ptolemaeus, better known as Ptolemy, a Greek national with Roman citizenship living in Egypt, attempted to do just that. He is best known
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