1958 · Army Ballistic Missile Agency
Explorer 4
successJuno-I | Explorer 4
An American satellite in order to study the Van Allen radiation belts and the effects of nuclear explosions upon these belts.
Overview
- Date / time
- July 26, 1958 at 03:00 PM UTC
- Outcome
- success
- Launch site
- Launch Complex 5
- Mission
- Explorer 4
- Mission type
- Earth Science
- Orbit achieved
- Medium Earth Orbit