Astronauts Mattingly and Hartsfield prepare to board van for liftoff rehersal

Astronaut John Young collecting samples at North Ray crater during EVA

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Astronaut Donald McMonagle works with HPP-2 experiment on middeck

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Astronaut Charles Conrad during extravehicular activity on lunar surface

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Astronaut Kevin P. Chilton uses helmet to bail water during bailout training

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Portrait of Astronaut Nick Hague

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Astronauts Musgrave and Akers suit up for final HST spacewalk

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View of Astronaut Virgil Grissom through spacecraft window prior to launch

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Commercial Crew Program Astronaut Training - Suni Williams and J

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Zero-g tests of involving Astronaut candidate Daniel C. Brandenstein

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View of Astronaut John Young through spacecraft window prior to launch

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Commercial Crew Program Astronaut Training - Suni Williams and J

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