Venera-4 was a Soviet spacecraft that successfully conducted the first successful direct probe of Venus and transmitted data about its atmosphere... Launched in 1967, it played a crucial role in advancing the understanding of Venus...
Venera-4 didn't land on Venus, instead, it performed a direct atmospheric entry, collecting data during its descent... It transmitted information about Venus' atmosphere, pressure, and temperature before losing contact...
Soviet Union Postal Administration honored the unmanned spacecraft Venera-4 with a 10-Russian kopek postage stamp released in 1968, coinciding with the eve of Cosmonautics Day...
This stamp can be collected under the themes:
(a) Spacecraft...
(b) Outer Space...
(c) Science & Technology...
(d) Planets...
(e) Space travel...
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