Russian Space Probes: Scientific Discoveries and Future Missions | SpringerLink
USSR Spacecraft - KSP1 The Spacecraft Exchange - Kerbal Space Program Forums
Venera | Soviet Exploration, Technology & Discoveries | Britannica
My attempt at the 'Mavr Spacecraft', a soviet plan for a manned mars mission by the 1980s. : r/KerbalSpaceProgram
Sept. 14, 1959 | Soviet Space Probe Is First Human-Made Object to Reach Moon - The New York Times
Space exploration - Milestones, Achievements, History | Britannica
Battered Soviet spacecraft will plummet to Earth decades after failed mission
Soviet space probe venera 5 or 6 launched in january 1969, this is a... News Photo - Getty Images
Russia's unmanned missions toward the Moon
Russian spacecraft reaches lunar orbit in preparation for moon landing | Space News | Al Jazeera
Why the Soviet space workhorse Soyuz is still going strong – 50 years on | Soyuz | The Guardian
Mars 1 Soviet Russian (USSR), spacecraft, launched Nov. 1, 1962, on an intended Mars flyby. The spacecraft's radio failed at 65.9 million miles (106 million kilometres Stock Photo - Alamy