who constructed the satellite?
Chief Soviet rocket scientist Sergei Korolev proposed a developmental plan for an artificial satellite
Sputnik 1
 chief Soviet rocket scientist Sergei Korolev proposed a developmental plan for an artificial satellite 
where did the launching of sputnik take place It was launched it into an elliptical low Earth orbit who was responsible for the launch? The Soviet Union when was it launched? 4 October 1957 was it a part of any space program? UNANSWERABLE was the union involved in any other such program? Yes, On April 12, 1961, the first cosmonaut, Yuri Gagarin, was sent to the space. He once flew around the Earth and successfully landed in the Kazakh steppe. where was this cosmonaut from? Klushino where can you find his statues? located in the town named after him as well as in Orenburg, Cheboksary, Irkutsk, Izhevsk, Some statues are A statue of Gagarin was unveiled at Admiralty Arch in The Mall in London. with what position did he begin his air force journey? Gagarin was commissioned a lieutenant in the Soviet Air Forces did the satellite have any replicas? At least two vintage duplicates of Sputnik 1 exist, built apparently as backup units.
wiki:19663429
Sputnik 1 [SEP] Satellite construction project
On 17 December 1954, chief Soviet rocket scientist Sergei Korolev proposed a developmental plan for an artificial satellite to the Minister of the Defence Industry, Dimitri Ustinov. Korolev forwarded a report by Mikhail Tikhonravov, with an overview of similar projects abroad. Tikhonravov had emphasized that the launch of an orbital satellite was an inevitable stage in the development of rocket technology. On 29 July 1955, U.S. President Dwight D. Eisenhower announced through his press secretary that, during the International Geophysical Year (IGY), the United States would launch an artificial satellite. Four days later, Leonid I. Sedov, a leading Soviet physicist, announced that they too would launch an artificial satellite.