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This page records Thor Delta C | Explorer 21 and its reported outcome: Launch Successful. The date above is a historical record.
Source record updated . This is a source update, not a confirmed launch time.
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Status reported by the mission data provider.
Explorer 21 (IMP 2) was a solar-cell and chemical-battery powered spacecraft instrumented for interplanetary and distant magnetospheric studies of energetic particles, cosmic rays, magnetic fields, and plasmas.
Published configuration and flight history.
American orbital launch vehicle family with Thor first stage and a delta second stage.
This is a mission record, not an upcoming calendar appointment.
A single scheduled moment. The schedule may change before launch.
Cape Canaveral SFS, FL, USA
Explore the launch pad on Earth using its published coordinates.
Explore Earth’s orbits
Links supplied by the mission data provider.
Coverage and times may change.
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