Soviet space exploration history on Soviet stamps
The history of Soviet space exploration has been well documented on the country's stamps. These include not only the notable accomplishments in space flight, including mankind's first satellite, Sputnik 1, first animal in space (the dog Laika on Sputnik 2), first human in space and Earth orbit (cosmonaut Yuri Gagarin on Vostok 1), first Moon impact (1959) and unmanned landing, first space station, and first interplanetary probe but also more general astronomical observation.
- "Russian Topical Stamps: Cosmos". Topical. Postage Stamps and Stationery of Russia and USSR. Retrieved 14 September 2010.
- "What Does It Say?". Philatelic Snippets. Astro Space Stamp Society. Retrieved 21 May 2012.
- "Exploring the Moon on stamps". Retrieved 26 December 2011.
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