Katherine Spies

Katherine Spies is an American engineer, United States Marine Corps aviator, test pilot, and NASA astronaut candidate. She was selected by NASA in 2025 as a member of NASA Astronaut Group 24, the agency's 24th astronaut candidate class. At the time of her selection, Spies was director of flight test engineering at Gulfstream Aerospace.

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Image: NASA Johnson Space Center / Josh Valcarcel - NASA - JSC · Public domain