SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Venera 4, Soviet Venus space probe. Still from a film shot to illustrate the probe's mission. The probe has released a parachute, as it would later do in the latter stages of its Venus mission. The Venera series of probes were used to explore the planet Venus. Venera 4, launched in 1967, weighed around a ton and was designed to study the Venusian atmosphere. It braked on entering and deployed a parachute, then continued to transmit data until the signal was lost after falling to an altitude of 25 kilometres.
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