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Untethered | Bruce McCandless

Bruce McCandless tested the Manned Maneuvering Unit during Space Shuttle mission STS 41-B in 1984. Although the unit had few operational uses, this photo of McCandless as the first human "satellite" became one of the most reproduced of the shuttle program.

"I was very pleased to be selected to be the first to fly the Manned Maneuvering Unit . . . sort of a human satellite or a human cannonball if you will."