SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Venera 4 descent and landing. Diagram of the flight and landing of the Venera 4 descent vehicle on the planet Venus. Venera 4 was a Soviet space probe launched in 1967. The descent vehicle transmitted data on the atmospheric composition of Venus until the signal was lost after falling to an altitude of 25 kilometres. The stages depicted are: 1. Start of the planetary session. Separation of the descent vehicle. Deceleration through the atmosphere. Deployment of the drogue parachute. Deployment of the main parachute. Start of radio transmission. Start of the radio altimeter. Scientific measurements. Landing.
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