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June 8, 2015 AT 1:00 pm

Incredible Photos from 50 Years of Spacewalks

Bruce untethered

Great spacewalk slideshow up on Popular Science.

For decades, astronauts in orbit had to be tied to their spacecraft when stepping outside. In 1984, Bruce McCandless performed the first untethered spacewalk using a Manned Maneuvering Unit—a handheld device that shoots out nitrogen gas for propulsion.

Read more.


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