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Cosmonaut Alexei Leonov ventured outside the Soviet spacecraft Voskhod 2, becoming the first person to walk in space.
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Alexei Leonov
Soviet cosmonaut (1934–2019)
Alexei Arkhipovich Leonov was a Soviet and Russian cosmonaut and aviator, Air Force major general, writer, and artist. On 18 March 1965, he became the first person to conduct a spacewalk, exiting the capsule during the Voskhod 2 mission for 12 minutes and 9 seconds. He was also…Source: Wikipedia (CC BY-SA)
Voskhod 2
Soviet crewed spaceflight; world's first space walk
Voskhod 2 was a Soviet crewed space mission in March 1965. The Vostok-based Voskhod 3KD spacecraft with two crew members on board, Pavel Belyayev and Alexei Leonov, was equipped with an inflatable airlock. It established another milestone in space exploration when Alexei Leonov…Source: Wikipedia (CC BY-SA)
Extravehicular activity
Activity done by an astronaut or cosmonaut outside a spacecraft
Extravehicular activity (EVA) is any activity done by an astronaut in outer space outside a spacecraft. In the absence of a breathable Earthlike atmosphere, the astronaut is completely reliant on a space suit for environmental support. EVA includes spacewalks and lunar or…Source: Wikipedia (CC BY-SA)