Explorer 4
Juno-I
Army Ballistic Missile Agency
Launch Status
Success Mission
Explorer 4
- Type: Earth Science
- Orbit: Medium Earth Orbit
An American satellite in order to study the Van Allen radiation belts and the effects of nuclear explosions upon these belts.
Location
Rocket
Agency
Army Ballistic Missile Agency
The Army Ballistic Missile Agency was formed to develop the U.S. Army’s first large ballistic missile. The agency was established at Redstone Arsenal on 1 February 1956, and commanded by Major General John B. Medaris with Wernher von Braun as technical director.