Kepler's 1st law

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Revision as of 22:45, 4 February 2020 by Boqu (talk | contribs) (Created page with "== Resources: == *[https://en.wikipedia.org/wiki/Kepler%27s_laws_of_planetary_motion#First_law_of_Kepler Kepler's 1st law] == Discussion: ==")
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