MadSci Network: Astronomy
Query:

Re: who originally thought that the earth was the center of the universe?

Date: Wed Mar 31 15:14:09 1999
Posted By: Jim O'Donnel, MadSci Astronomy Moderator
Area of science: Astronomy
ID: 921541065.As
Message:

Claudius Ptolemy is probably the best known philosopher to propose an Earth-based cosmology. He came up with a very complicated system in which the Earth sat at the centre of the Universe, orbitted by the Sun and planets which travelled on circles within circles, a mathematical construction known as epicycles.

There is a whole section of links to information about Ptolemy at Yahoo.

Jim O'Donnell

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