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Floating Free

Views of the extravehicular activity during STS 41-B

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Views of the extravehicular activity during STS 41-B

Views of the extravehicular activity during STS 41-B

NASA Johnson Space Center (NASA-JSC)
In February 1984, shuttle astronaut Bruce McCandless became the first astronaut to float in space untethered, thanks to a jetpack-like device called the Manned Maneuvering Unit (MMU).

MMUs are no longer used, but astronauts now wear a similar backpack device in case of emergency.

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