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Aleksei Arkhipovich Leonov

Leonov, Aleksei Arkhipovich (ŭlˌyĭksyāˈ ärkhˌyĭpôˈvyĭch) [key], 1934–, Soviet cosmonaut. While serving as copilot of Voskhod 2 (Mar. 18–19, 1964), he became the first person to perform extravehicular activity. Leonov was also command pilot for Soyuz 19 in the Apollo-Soyuz Test Project (July 15–21, 1975).

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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