Soviet space exploration history on Soviet stamps

Soviet space exploration history has been well documented on Soviet stamps.

These Soviet stamps cover a broad spectrum of subjects related to the Soviet space program.

While much of the focus has been placed on the nation's notable "firsts" in space flight, including: Earth orbiting satellite, Sputnik 1; animal in space, the dog Laika on Sputnik 2; human in space and Earth orbit, Yuri Gagarin on Vostok 1; first spacewalk, Alexei Leonov on Voskhod 2; woman in space, Valentina Tereshkova on Vostok 6; Moon impact, 1959, and uncrewed landing; space station; and interplanetary probe; numerous stamps have paid tribute to more general astronomical topics as well.

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Yuri Gagarin on 12 April 1961, became the first human in outer space and the first to orbit the Earth. A Soviet stamp issued after the Gagarin's flight
Valentina Tereshkova , the first woman in space