What was the name of the first artificial satellite launched by the Soviet Union in 1957?

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Multiple Choice

What was the name of the first artificial satellite launched by the Soviet Union in 1957?

Explanation:
Sputnik 1 marks the moment the Soviet Union became the first to place an artificial satellite into Earth orbit in 1957. It was a small metal sphere, about 58 cm across, with four antennas that transmitted signals back to Earth. Launched from Baikonur on October 4, 1957, aboard the R-7 rocket, it demonstrated that a satellite could reach orbit and be tracked from the ground, kicking off the space age and the space race. This mission isn’t to be confused with other early space efforts: Sputnik 2 came later in 1957 and carried a dog named Laika; Luna 1 arrived in 1959 as a lunar probe; Vanguard 1 was launched by the United States in 1958.

Sputnik 1 marks the moment the Soviet Union became the first to place an artificial satellite into Earth orbit in 1957. It was a small metal sphere, about 58 cm across, with four antennas that transmitted signals back to Earth. Launched from Baikonur on October 4, 1957, aboard the R-7 rocket, it demonstrated that a satellite could reach orbit and be tracked from the ground, kicking off the space age and the space race.

This mission isn’t to be confused with other early space efforts: Sputnik 2 came later in 1957 and carried a dog named Laika; Luna 1 arrived in 1959 as a lunar probe; Vanguard 1 was launched by the United States in 1958.

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