A segment joining a planet with the Sun encompasses equal areas during equal intervals of time.
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| created: 2016-11-27 20:00:44 | modified: 2019-08-24 07:47:43 | by: bookofproofs | references: [6301]
[6301] Ruhrländer, Michael: “Aufstieg zu den Einsteingleichungen”, Pro BUSINESS GmbH, 2014