Sputnik I, the world's first artificial satellite, was launched by the Soviet Union on Oct. 4, 1957. It was 22.8 inches in diameter, weighed 183.9 pounds and took about 98 minutes to orbit the earth. The satellite had fo... More »

The popular reaction of Americans to the launch of Sputnik was shock and anxiety. Sputnik launched in 1957, still near the beginning of the Cold War, and the Soviet Union, the major enemy of the United States in that con... More »

The first space probe, Sputnik 1, was invented in 1957 by a large team of engineers, scientists and designers employed by the Soviet Union and headed by rocket pioneer Sergei Korolev. A space probe is any unmanned, autom... More »

Launched in 1957, Sputnik 2 was the second artificial satellite to be put into Earth orbit and the first satellite to carry a living passenger, a dog named Laika (a Russian word meaning "barker"). More »

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In July 1958, Congress passed legislation establishing NASA, in response to the Soviet Union's launching of Sputnik, the first man-made satellite. Later that year, NASA began Project Mercury, the first U.S. human spacefl... More »

www.reference.com Science Astronomy Space Travel

On October 4, 1957, the Soviet Union launched the first artificial satellite, Sputnik 1. It was an aluminum sphere a bit less than 23 inches in diameter that weighed 183.9 pounds. More »

www.reference.com Science Astronomy

Like most space endeavors, Sputnik 1 was a team effort. However, Mikhail Khomyakov is typically credited with doing most of the design work on Sputnik 1. More »