Explorer 14 was a spacecraft instrumented to measure cosmic-ray particles, trapped particles, solar wind protons, and magnetospheric and interplanetary magnetic fields. October 2, 1962 at 22:11 UTC · Launch Successful Thor Delta A — United States Air Force, to Elliptical Orbit Space Launch Complex 17B, Cape Canaveral SFS, FL, USA The world's 201st orbital launch attempt, and 59th of 1962. Data: Launch Library 2, The Space Devs.