“ June —- Russian cosmonaut Fyodor Yurchikhin, Expedition 36 flight engineer, participates in a session of extravehicular activity (EVA) as work continues on the International.
February 1984 – Astronauts Bruce McCandless II and Robert L. Stewart make the first untethered spacewalk using the Manned Maneuvering Unit (MMU) during mission of the Space Shuttle Challenger.
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