Career Backgrounds
Koch most recently served as a mission specialist aboard NASA’s Artemis II mission in April, which was the first crewed flight around the Moon in more than 50 years. Prior to that, she spent 328 consecutive days aboard the International Space Station, setting the record for the longest single spaceflight by a woman and participating in the first all-female spacewalks.
Koch began her NASA career as an electrical engineer at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, where she developed scientific instruments for space missions. Before her selection as an astronaut in 2013, her experience included scientific field engineering in Antarctica and the Arctic. She has since held leadership positions within NASA’s Astronaut Office and at the agency’s Johnson Space Center in Houston.
Katherine Van Hooser, whom Koch succeeds, joined NASA in 1991 at the agency’s Marshall Space Flight Center in Huntsville, Alabama. Her career began in propulsion engineering and technical leadership, with early work focused on liquid rocket engine turbomachinery. She later became chief engineer for the space shuttle main engine, leading engineering efforts through the final 21 shuttle flights. Van Hooser also served as the first chief engineer for the Space Launch System’s Liquid Engines Element, helping advance propulsion systems for NASA’s Artemis missions.
As Marshall’s chief engineer and, since 2023, NASA’s deputy chief engineer, Van Hooser provided technical leadership and oversight across the agency’s programs. Amit Kshatriya, NASA associate administrator and chief engineer, acknowledged her contributions. “Katherine has been an extraordinary leader throughout her career, bringing technical expertise, sound judgment, and an unwavering commitment to mission success to some of NASA’s most complex engineering challenges,” Kshatriya said. “Her leadership has strengthened our engineering community and helped guide the agency through critical milestones and transitions. Christina brings a unique combination of engineering expertise, operational experience, and proven leadership, both on the ground and in space. I am grateful to Katherine for her exceptional service and confident Christina will continue the tradition of technical excellence that is essential to everything we do at NASA.”