Touching the Void: The Story of the Space Jet Pack
From Today I Found Out. On February 7, 1984, 370 kilometres above the earth, NASA astronaut Bruce McCandless II floated into the payload bay of the Space Shuttle Challenger and prepared to make history. Strapped to his back was a bulky device resembling a futuristic chair, known as the Manned Maneuvering Unit or MMU. As…