Physics for beginners/02-heavenly motions
< Physics for beginners

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The sun is yellow, Earth is blue, and Mars is red. Both models explain opposition, conjunction, and retrograde motion.

Each subpage is devoted to a chapter of Matthew Raspanti's original work. Click the image of the pdf file shown to the right to read the chapter.
- To read other works by this author visit http://www.thenatureofthings.info/index.html
