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The Space Age Begins

Round, silver Sputnik satellite against yellow background
Fifty years ago today on Oct. 4, 1957, the Soviet Union launched Sputnik, humanity's first artificial satellite, thereby ushering in the Space Age.

Fifty years ago today on Oct. 4, 1957, the Soviet Union launched Sputnik, humanity’s first artificial satellite, thereby ushering in the Space Age.Image Credit: NASA