Astronaut Butch Wilmore's venture to space aboard the ill-fated Boeing Starliner spacecraft appears to be his last – at least with NASA.

Astronaut Barry "Butch" Wilmore announced his retirement Wednesday after 25 years with NASA and serving as a U.S. Navy test pilot before becoming an astronaut.

NASA Astronaut Butch Wilmore is retiring four months after being 'stranded' in space for nearly 300 days at the International Space Station. He and Suni Williams returned to Earth on March 18, 2025.