NASA Astronaut Suni Williams Retires

NASA astronaut Suni Williams at Cape Canaveral Air Force Station’s Naval Ordnance Test Unit basin in Florida on March 28, 2018.

Credit: NASA/Kim Shiflett

After 27 years of service, NASA astronaut Suni Williams retired from the agency, effective Dec. 27, 2025. Williams completed three missions aboard the International Space Station, setting numerous human spaceflight records throughout her career.

“Suni Williams has been a trailblazer in human spaceflight, shaping the...