31 янв 1958 г. - Explorer 1-THE FIRST SATELLITE LAUNCHED BY THE U.S.
Описание:
It was the first spacecraft to detect the Van Allen radiation belt. The Van Allen Belt is one of at least two layers of energetic charged particles that is held in place around Earth by its magnetic field.Добавлено на ленту времени:
Дата:
31 янв 1958 г.
Сейчас
~ 67 г назад