Cosmonaut Anna Kikina installs radiation detectors and collects data from them aboard the International Space Station.
Expedition 68 Flight Engineers Anna Kikina and Koichi Wakata pose together with dosimeters, or radiation detectors.
Astronaut Koichi Wakata is pictured in between a pair of spacesuits inside the International Space Station's Quest airlock.
Cosmonaut Anna Kikina works on electronics hardware maintenance inside the International Space Station's Zarya module.
Astronaut Koichi Wakata configures spacewalking hardware inside the International Space Station's Quest airlock.
Astronaut Nicole Mann configures spacewalking hardware inside the International Space Station's Quest airlock.
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NASA Administrator Bill Nelson lays a wreath at the Space Shuttle Challenger Memorial.
“When NASA hired me to be an astronaut, I had a lot of imposter syndrome going on. It was as…
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