Jan 30 1988
From The Space Library
This date marked the thirtieth anniversary of the launch of Explorer 1, the first satellite put into orbit by the United States. The launch of the 31-pound satellite aboard a modified Army Jupiter-C booster marked America's entry into a space race with the Soviet Union following their launch of two Sputnik satellites. In addition, Explorer 1 discovered the Van Allen radiation belts that surround the Earth. (UPI, Jan 30/88)
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