Which spacecraft milestone signaled the start of the Space Race, as the first satellite launched by the USSR?

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Multiple Choice

Which spacecraft milestone signaled the start of the Space Race, as the first satellite launched by the USSR?

Explanation:
Sputnik was the Soviet Union’s first artificial satellite, launched in 1957. Its successful orbit proved that a nation could build rockets capable of reaching space and placing objects into orbit, which instantly reframed the Cold War as a high-stakes space competition. This show of technological capability spurred a dramatic U.S. response—massive investment in science and engineering, the creation of NASA, and new education and research programs—to catch up. While later milestones like Explorer 1 (the United States’ first satellite), Vostok (the first human in space), and Apollo 11 (the Moon landing) all follow, Sputnik’s orbital launch is what signaled the start of the Space Race.

Sputnik was the Soviet Union’s first artificial satellite, launched in 1957. Its successful orbit proved that a nation could build rockets capable of reaching space and placing objects into orbit, which instantly reframed the Cold War as a high-stakes space competition. This show of technological capability spurred a dramatic U.S. response—massive investment in science and engineering, the creation of NASA, and new education and research programs—to catch up. While later milestones like Explorer 1 (the United States’ first satellite), Vostok (the first human in space), and Apollo 11 (the Moon landing) all follow, Sputnik’s orbital launch is what signaled the start of the Space Race.

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