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| | Sputnik program Summary |
 | | Sputnik is the name given to a series of scientific research satellites launched by the Soviet Union during the period from 1957 to 1961. |
 | | Sputnik 3 was launched on May 15, 1958, Sputnik 4 on May 15, 1960, Sputnik 5 on August 19, 1960, Sputnik 6 on December 1, 1960, Sputnik 7 on February 4, 1961, Sputnik 8 on February 12, 1961, Sputnik 9 on March 9, 1961, and Sputnik 10 on March 25, 1961. |
 | | Sputnik designations were briefly given to a series of interplanetary probes but these were renamed as part of the Luna series in 1962 and 1963. |
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