NASA Astronaut Christina Koch
Christina Hammock Koch was selected as a NASA astronaut in 2013 and is currently assigned as a mission specialist on the Artemis II mission to the moon. She most recently served as a flight engineer onboard the International Space Station as part of Expedition 59, 60, and 61.
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Christina Koch
Learn more about astronaut Christina Koch, including her flight experience, hobbies, education, background and more.
View Christina Koch Biography about Christina Koch![NASA astronaut Christina Koch takes an out-of-this-world "space-selfie" with the Earth behind her.](https://www.nasa.gov/wp-content/uploads/2023/03/48937391041-30b94bfd40-k.jpg?w=1536)
(18 October 2019) NASA astronaut Christina Koch takes an out-of-this-world “space-selfie” with the Earth behind her. She and fellow NASA astronaut Jessica Meir (out of frame) ventured into the vacuum of space for seven hours and 17 minutes to swap a failed battery charge-discharge unit (BCDU) with a spare during the first all-woman spacewalk. The BCDU regulates the charge to the batteries that collect and distribute solar power to the orbiting lab’s systems.