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The first satellite in history. SPUTNIK 1 (1957)
The Soviet Union launched the first artificial satellite in history to enter orbit around the Earth in 1957. Sputnik 1 would be the first of a program that took the technological and military race with the United States to space. -
Sputnik 2
Sputnik 2 was the second spacecraft put into orbit around the Earth, at 02:30 UTC on November 3, 1957, being the first spacecraft to carry biological material. -
Explorer 1
It was the first spacecraft to detect the Van Allen radiation belts, named after James van Allen, who had directed the design and construction of the scientific instrumentation for Explorer 1, which returned data for just under four months. , until their batteries ran out. -
Vanguard 1
Image result for the fourth satellite launched into space
It was the first artificial device in space powered by solar energy. Its stable orbit provided valuable data on the geometry of the Earth: Revealing that the Earth is not a perfect ellipsoid, but has a complex ('pear') shape called a geoid. -
Sputnik 3
Sputnik 3 was a Soviet satellite launched on May 15, 1958 from the Baikonur Cosmodrome with an R-7A1 rocket. It was a research satellite to explore the upper atmosphere and near space.