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U.S. Army Projected Pass Illustration

U.S. Army Projected Pass Illustration

This official U.S. Army illustration captioned: "Artist’s drawing illustrates the first four projected passes over the Earth of the satellite launched by the U.S. Army. It was launched to orbit at about a 20-degree angle to the equator. Its orbit is between the 35th latitudes North and South."

Image Credit: James A. Van Allen Papers (RG 99.0142), University Archives, The University of Iowa Libraries
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