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1958 Press Photo Explorer 4 US satellite Dr James van - RRX57585

AdID: 446380

Availability: In stock

Part Number: RRX57585

Height: 7

Width: 10

Source: Rogers


Photo measures 7 x 10. Explorer 4 (satellite 1958 epsilon) was a US satellite launched on July 26, 1958. It was instrumented by Dr. James van Allen's group. The Department of Defense's Advanced Research Projects Agency had initially planned two satellites for the purposes of studying the Van Allen radiation belts and the effects of nuclear explosions upon these belts (and the Earth's magnetosphere in general), however Explorer 4 was the only such satellite launched.