The US enter the Space Race by launching Explorer 1 (31 янв 1958 г. – 11 дек 1965 г.)
Описание:
the first US satellite to reach orbit. It carried experimental equipment that led to the discovery of the Van Allen radiation belt.Добавлено на ленту времени:
Дата:
31 янв 1958 г.
11 дек 1965 г.
~ 7 years and 10 months