Explorer 3 - Space launch mission detailed information
Explorer 3 3
26 MAR 1958
Army Ballistic Missile Agency
Launch Complex 26A
Small satellite launched into an eccentric orbit with a cosmic ray counter and a micrometeorite detector.
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.