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20 сент 1609 г. - Kepler says square of period of planet's orbital motion is proportional to cube of semimajor axis.
Добавлено на ленту времени:
History of Astronomers
By
Stephanie Szczech
21 окт 2018
0
0
382
Дата:
20 сент 1609 г.
Сейчас
~ 416 г назад
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