The Sputnik 15 satellite was launched in 1962, marking a major milestone in the space race between the United States and the Soviet Union. This satellite was the first of its kind, and its successful launch signaled the beginning of a new era of space exploration. The satellite was equipped with a
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Sputnik 3 was a Soviet satellite launched on 15 May 1958 from Baikonur Cosmodrome by a modified R-7/SS-6 ICBM. The scientific satellite carried a large array of instruments for geophysical research of the upper atmosphere and near space.