Venera, Card No 25 (RaceIntoSpace 1971)
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Card No. 25: Venera
Russia's enormous triumph of parachuting instrument capsules into the dense atmosphere of Venus was first achieved on Oct. 18, 1967.
After a journey of 217 million miles, a 3¼ foot diameter 844 pound capsule detached itself from the 1,595 pound spacecraft and started its descent. Following a period of aerodynamic braking, it released a high-temperature parachute and simultaneously radio signals streamed back to Earth.
Similar Venera 5 and 6 spacecraft arrived on May 16 and 17, 1969 respectively. According to data received, the atmosphere consists of 97% carbon dioxide with small amounts of water vapour, oxygen and nitrogen; when signals ceased several miles above the surface, pressure was 27 atmospheres and temperature 320°C.
