Astronaut Bruce McCandless II, mission specialist, participates in an extravehicular activity a few meters away from the cabin of the shuttle Challenger during the STS-41B mission. He is using a nitrogen-propelled hand-controlled Manned Maneuvering Unit. This was the first time an astronaut performed a spacewalk without being tethered to the shuttle.
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Astronaut Bruce McCandless II, mission specialist, participates in an extravehicular activity a few meters away from the cabin of the shuttle Challenger during the STS-41B mission. He is using a nitrogen-propelled hand-controlled Manned Maneuvering Unit. This was the first time an astronaut performed a spacewalk without being tethered to the shuttle.
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