Look inside the first U.S. Earth-orbiting satellite and learn how it worked.
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JPL designed and built Explorer 1, the first Earth-orbiting U.S. satellite and the first
to return scientific data from space.
+ Play video |
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This Army newsreel recounts the tense and exciting days leading up to the launch of
Explorer 1, the satellite that kicked off U.S. space exploration.
+ Play video |
