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NASA engineer and astronaut Christina Koch will serve as the agency’s acting deputy chief engineer beginning on Sunday, Nov. 1, following the retirement of Katherine Van Hooser, who will conclude more than 35 years of distinguished service to the agency on Wednesday, Oct. 21.
In her new role, Koch will help lead NASA’s engineering community, supporting technical oversight, mission readiness, and engineering excellence across the agency’s programs and projects. With this appointment, Koch will transition to management astronaut status and will no longer be eligible for future spaceflight assignments.
“Christina has seen NASA engineering from both sides of the equation: developing complex systems on the ground and trusting them with her life in space,” said NASA Administrator Jared Isaacman. “After spending nearly a year living and working aboard the International Space Station and helping lead America back around the Moon on Artemis II this year, she brings an extraordinary combination of technical expertise, operational experience, and judgment to this role. I am excited to see the impact she will have across NASA as we return Americans to the lunar surface, build the Moon Base, get underway on nuclear power in space, and develop the capabilities that will ultimately take us on to Mars.”
“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,” said Amit Kshatriya, NASA associate administrator and chief engineer. “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.”
Koch most recently served as a mission specialist aboard NASA’s Artemis II mission in April, helping carry out the first crewed flight around the Moon in more than 50 years. She previously 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, developing scientific instruments for space missions. Before her selection as an astronaut in 2013, her experience also 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, bringing a combination of technical expertise, operational experience, and firsthand understanding of the demands of human spaceflight to her new role.
Van Hooser joined NASA in 1991 at the agency’s Marshall Space Flight Center in Huntsville, Alabama, beginning a distinguished career in propulsion engineering and technical leadership. Her early work focused on liquid rocket engine turbomachinery before she became chief engineer for the space shuttle main engine, leading engineering efforts through the final 21 shuttle flights. She later served as the first chief engineer for the Space Launch System’s Liquid Engines Element, helping advance the propulsion systems supporting NASA’s Artemis missions.
As Marshall’s chief engineer and, since 2023, NASA’s deputy chief engineer, Van Hooser provided critical technical leadership and oversight across the agency’s programs. Her steady guidance through complex engineering challenges and organizational transitions helped maintain continuity, strengthen collaboration, and keep mission readiness at the forefront of NASA’s work.
Learn more about NASA’s missions on the agency’s website:
George Alderman / Cheryl Warner
Headquarters, Washington
202-358-1600
george.a.alderman@nasa.gov / cheryl.m.warner@nasa.gov
2026-10-13 17:56

This infographic illustrates the distances driven by various rovers on the surface of Earth’s Moon and Mars. Of the vehicles shown, the NASA Mars rovers Perseverance and Curiosity are still operational and moving across the surface; the figures shown for those two are distances driven as of Oct. 11, 2026. As of that date, Perseverance exceeded the distance record held by NASA’s Opportunity rover, which came to a final halt in 2018 at about 28.1 miles (45.16 kilometers) driven.
NASA’s Jet Propulsion Laboratory, which is managed for NASA by Caltech in Pasadena, California, built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate in Washington, as part of NASA’s Mars Exploration Program portfolio.
For more about Perseverance: https://science.nasa.gov/mission/mars-2020-perseverance/
2026-10-13 17:48

Members of NASA’s Perseverance Mars mission team gather in the Mars Yard at the agency’s Jet Propulsion Laboratory in Southern California with a certificate from Guinness World Records marking the rover distance record on the Red Planet. Positioned in front of the team is OPTIMISM (Operational Perseverance Twin for Integration of Mechanisms and Instruments Sent to Mars), a full-scale engineering model used to plan the rover’s driving routes and science activities on Mars. NASA JPL, which is managed by Caltech, built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate in Washington, as part of NASA’s Mars Exploration Program portfolio.
For more about Perseverance: https://science.nasa.gov/mission/mars-2020-perseverance/
2026-10-13 17:42

Rover tracks and a rocky Martian landscape are shown in this image captured by one of the navigation cameras (navcams) aboard NASA’s Perseverance Mars rover on Oct. 11, 2026, the 2,006th Martian day, or sol, of the mission. During that sol’s drive, spanning 299.6 feet (91.31 meters), the mission passed a major milestone: pushing Perseverance’s total driving distance beyond that of the agency’s Opportunity rover, which logged 28.06 miles (45.16 kilometers) during its 15-year mission on Mars.
NASA’s Jet Propulsion Laboratory, which is managed for the agency by Caltech in Pasadena, California, built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate in Washington, as part of NASA’s Mars Exploration Program portfolio.
For more about Perseverance: https://science.nasa.gov/mission/mars-2020-perseverance/
2026-10-13 17:38
Three NASA-supported small spacecraft, along with many commercial payloads, are shown before being encapsulated in a SpaceX Falcon 9 ahead of launch on Oct. 1, 2026. The ASCENT Propulsion Dual Mode CubeSat, the Supernova Remnants and Proxies for ReIonization Testbed Experiment (SPRITE) CubeSat, and the Small Spacecraft Propulsion and Inspection Capability (SSPICY) mission will demonstrate new propulsion technologies, study how galactic dust and high-energy radiation move through galaxies, and advance capabilities for inspecting inactive satellites.
Image credit: SpaceX
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