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NASA / Science Source
Photograph - Photograph
Astronaut Bruce McCandless II, one of two 41-B mission specialists, "spacewalking" a few meters from the Earth-orbiting space shuttle Challenger. The shuttle's cabin and open payload bay may be seen in the reflection from his gold-tinted visor. This historic extravehicular activity was the first to make use of a nitrogen-propelled hand-controlled device called the manned maneuvring unit (MMU). The unit allows for much greater mobility than that afforded to previous spacewalkers who had to use restrictive tethers.
February 19th, 2013
Viewed 3 Times - Last Visitor from Höör, 27 - Sweden on 08/17/2014 at 1:41 PM
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