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File:Kepler Mars retrograde.jpg

Kepler_Mars_retrograde.jpg ‎(409 × 436 pixels, file size: 36 KB, MIME type: image/jpeg)

Summary

Johannes Kepler's depiction of the geocentric motions of Mars, from Astronomia Nova (1609).

source: http://www.mlahanas.de/Greeks/PtolemyAstronomy.htm

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