WASHINGTON: Veteran NASA astronaut Sunita “Suni” Williams has retired after 27 years of service, marking the end of a distinguished career in human spaceflight.
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Williams, a former Navy pilot, joined NASA in 1998 and became known for her extensive missions aboard the International Space Station (ISS). Her most recent assignment, which began in 2024, extended unexpectedly from a planned week to nine months due to technical issues with the Boeing Starliner spacecraft.
.@NASA astronaut Suni Williams retires after 27 years, effective Dec. 27, 2025. Williams completed three missions aboard the International Space Station, setting numerous human spaceflight records. More… https://t.co/xrxErQKntr pic.twitter.com/CnRS693KSV
— International Space Station (@Space_Station) January 21, 2026
During this mission, Williams spent 286 days aboard the ISS alongside astronaut Butch Wilmore before returning to Earth in March 2025 via the SpaceX Dragon capsule. Over her career, she accumulated a total of 608 days in space across three missions, making her one of the most experienced astronauts in NASA’s history.
Williams also holds the record for the longest cumulative spacewalk time by a woman, logging 62 hours and 6 minutes, surpassing Peggy Whitson’s previous record of 60 hours and 21 minutes. Her contributions to human spaceflight have included leadership aboard the ISS and advancing commercial space missions to low Earth orbit.
In a statement, NASA Administrator Jared Isaacman praised Williams as a trailblazer, saying, “Williams helped shape the future of exploration through her leadership aboard the space station and by paving the way for commercial missions to low Earth orbit.”
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Williams’ retirement, effective December 27, 2026, concludes nearly three decades of pioneering work in space exploration. She is widely regarded for her dedication, resilience, and contributions to both scientific research and the growing commercial space sector.
Her legacy continues to inspire future generations of astronauts and space enthusiasts worldwide.