1 янв 1609 г. - Kepler published 1st two laws
Описание:
1: the orbit of every planet is an ellipse with the sun as one of 2 foci2: a line joining the planet and the sun sweeps out equal amounts in equal time periods
Добавлено на ленту времени:
Дата:
1 янв 1609 г.
Сейчас
~ 416 г назад