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File:Kepler Mars retrograde.jpg
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Fișier:Kepler Mars retrograde.jpg
English Diagram of the geocentric trajectory of
Mars
through several periods of apparent
retrograde
motion (
Kepler
, Astronomia nova, Chapter 1, 1609)
Fișier:Isaac Newton - Principes mathématiques de la philosophie naturelle, tome2 (1759).djvu
Isaac Newton - Principes mathématiques de la philosophie naturelle, tome2 (1759) (page 189 crop).
jpg