1 янв 1755 г. - Mars in focus
Описание:
Within a 100 years of the first full observation astronomers had deduced the rotational period and axial tilt of Mars as well as observed albedo features, dark patches, and polar ice caps.Добавлено на ленту времени:
Дата:
1 янв 1755 г.
Сейчас
~ 269 г назад
