Explorer 1
Juno-I
Army Ballistic Missile Agency
Mission
Explorer 1
Type: Test Flight
First successfully launched American satellite. It was the first spacecraft to detect the Van Allen Radiation Belt.
Location
Launch Complex 26A
Cape Canaveral, FL, USA
872 rockets have launched from Cape Canaveral, FL, USA.

Rocket
Juno-I – Chrysler
- Family: Redstone
- Length: 21.2 m
- Diameter: 1.78 m
- Launch Mass: 29 T
- Low Earth Orbit Capacity: 11 kg
The Juno-I was manufactured by Chrysler with the first launch on 1958-01-31. Juno-I has 3 successful launches and 3 failed launches with a total of 6 launches. The Juno I was a four-stage American booster rocket which launched America’s first satellite, Explorer 1 in 1958. A member of thr redstone family, it was derived from the Jupiter-C sounding rocket.
Agency
Army Ballistic Missile Agency – ABMA
- Type: Government
- Abbreviation: ABMA
- Country: USA
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.