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Laika, on 3 November 1957, became the first living creature sent into Earth orbit by the Soviet Union aboard the Sputnik 2 spacecraft. Laika, a stray mixed-breed dog from the streets of Moscow, was selected for this historic mission to test the effects of space travel on living organisms. Historical Background In the mid-1950s, the "Space Race" between the United States and the Soviet Union had evolved into a global technological competition. The Soviet Union gained temporary superiority in this