The science buried under the pseudoscience.
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Sources:
Mars photography by Tunç Tezel: http://www.twanight.org/newtwan/galle...
Mars visualization from Nooch 86: • Retrograde Motion of Planets Explained
Solar system orbits via Michael Van Daniker, Andrew Lund, and the Astronomy Workshop of Douglas Hamilton at U. Maryland http://janus.astro.umd.edu/SolarSystems/
Ptolemaic system vsualizer via Nebraka Astronomy Applet Project: http://astro.unl.edu/naap/ssm/animati...
Retrograde motion visualizer via MHeducation: http://highered.mheducation.com/olcwe...
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