U. S. PLANETARY LAUNCH SURGE
Missions Mark Resurgence of U. S. Planetary Exploration
PASADENA, CALIF. The United States’ first orbiting satellite, Explorer 1, was developed by Jet Propulsion Laboratory (JPL) and launched in 1958. Explorer 1 was the forerunner of a long series of stunning U. S. scientific and engineering achievements in space exploration over the past three decades.
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