Explorer 10

Explorer 10

Spacecraft
Explorer 10 was a NASA satellite that investigated Earth's magnetic field and nearby plasma. Launched on 25 March 1961, it was an early mission in the Explorer program and was the first satellite to measure the "shock wave" generated by a solar... Wikipedia
Launch date: March 25, 1961
Apogee altitude: 180,100 km (111,900 mi)
Decay date: 1 June 1968
Mission duration: 52 hours (achieved)
Rocket: Thor DM-19 Delta (Thor 295)
Spacecraft: Explorer X
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