With a series of small beeps from a spiky globe 50 years ago lastmonth, the world shrank--and humanity's view of Earth and the cosmosexpanded. Sputnik, the first artificial satellite, was launched by theSoviets and circled the globe Oct. 4, 1957. To commemorate the 50th anniversary of this important historical milestone, several educational organizations have offered free online resources for teaching about itsimpact. For example, history teachers can give students an in-depth look at the impact that Sputnik’s launch had on the United States and the Soviet Union, and how it helped to escalate the Cold War arms race,with “History...

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