Talk:De motu corporum in gyrum
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[edit] Not That There's Anything Wrong With That
Newton told Halley that he had proved that the inverse-square force necessarily resulted in an elliptical orbit. (Can't find it right now. I'll send it to you later.) Instead of this proof, Newton sent De Motu to Halley. This treatise contained a demonstration of how an elliptical orbit can be related to the inverse-square force. This was the opposite of what was promised.Lestrade 14:36, 4 February 2006 (UTC)Lestrade