1 янв 150 г. - Ptolemy discovers the ptolemaic system
Описание:
The exact date of this event is unknown but he discovered it sometime during the 2nd century. it is a geocentric cosmology and assumes that the earth is the center of the universe.Добавлено на ленту времени:
Дата:
1 янв 150 г.
Сейчас
~ 1875 г назад
