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List of spacecraft called Sputnik
Sputnik, a Russian word meaning "companion" or "satellite", is a name applied to certain spacecraft launched under the Soviet space program. "Sputnik 1", "Sputnik 2" and "Sputnik 3" were the official Soviet names of those objects, while the remaining designations in the series were not official names, but were names applied in the West, to objects whose original...
Timeline of Events
1957
11.3.1957
Sputnik program: The Soviet Union launches ''Sputnik 2.'' On board is the first animal to enter orbit, a dog named Laika.
1958
5.15.1958
The Soviet Union launches Sputnik 3.
1960
5.15.1960
The Soviet Union launches Sputnik 4.