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20 Sept 1609 Jahr - Kepler says square of period of planet's orbital motion is proportional to cube of semimajor axis.
Zugefügt zum Band der Zeit:
History of Astronomers
By
Stephanie Szczech
21 Okt 2018
0
0
381
Datum:
20 Sept 1609 Jahr
Jetzt
~ 416 years ago
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