NASA astronaut Chris Williams safely processes samples of a bacterial pathogen

Expedition 53/54 Crew Visit With Astronaut Mark Vande Hei

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JAXA astronaut Kimiya Yui displays an advanced sample processing cassette

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FSDC, Astronauts Mike Lopez-Alegria and Fred Leslie perform IFM on experiment

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Astronauts Linda Godwin and Michael "Rich" Clifford perform EVA

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Astronaut Collins and cosmonaut Titov organize TIPS paper messages

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Astronaut Nick Hague takes a high-flying "space-selfie"

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NASA astronaut Jonny Kim conducts research operations for the Fluid Particles investigation

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View of Astronaut Owen Garriott taking video of two Skylab spiders experiment

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Group 14, 1992 Astronaut Class, survival training at Fairchild AFB

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President Trump Calls Astronauts During First All-Woman Spacewal

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ASTRONAUTS YOUNG AND DUKE - ROCK FORMATIONS - SIMULATED LUNAR TRAVERSE - CA

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President Trump Calls Astronauts During First All-Woman Spacewal

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Astronaut John Young participates in lunar surface EVA training at KSC

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Astronauts Winston E. Scott and Catherine G. Coleman during training

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President Trump Calls Astronauts During First All-Woman Spacewal

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JAXA astronaut works on the Japanese robotic arm's Small Fine Arm

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ASTRONAUT CHARLES CONRAD, JR. - SKYLAB (SL)-2 - JSC

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NASA astronaut Jonny Kim works inside the Microgravity Science Glovebox

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Astronaut Alan Shepard - U.S.S. Champlain - Post-Recovery Mercury Capsule

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President Trump Calls Astronauts During First All-Woman Spacewal

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Astronaut Kathryn Thornton on HST photographed by Electronic Still Camera

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ASTRONAUT GROUP - GT-6 AND GT-7 CREWS - WELCOME

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NASA astronauts Chris Williams and Jack Hathaway pose for a portrait inside the cupola

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Astronaut Sophie Adenot is pictured inside the International Space Station's Quest airlock

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