Explorer 1 Spacecraft

Explorer 1 Spacecraft
Fifty years ago, on Jan. 31, 1958, the JPL-
designed and -build Explorer 1 soared into
space, becoming the first Earth-orbiting U.S.
satellite. Take a look inside the spacecraft
and learn how it worked.

+ Interactive feature

Visit the Explorer 1 site for more
information about America's first space satellite.

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