Carl Sagan on Epicycles, Ptolemy, and Kepler

Name: Carl Sagan on Epicycles, Ptolemy, and Kepler
Uploaded: 2008-02-21T23:26:53Z
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Description: Carl Sagan on Epicycles, Ptolemy, and Kepler

39.4K views · 18 years ago · 10:33

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Feb 21, 2008 · 39.4K views

Carl Sagan on Epicycles, Ptolemy, and Kepler