Gemini Maneuvering Unit
This is a training version of the Gemini IX-A maneuvering unit. It is the same size and weight as the one Gene Cernan intended to wear in space, although he never used it due to his exhaustion. Jet-powered backpacks were not used during spacewalks until Space Shuttle missions in 1984.
Image Number: NASM2014-05662
Credit: Image by Dane Penland, National Air and Space Museum, Smithsonian Institution
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