NEW DELHI — Sunita Williams, the record-breaking astronaut who turned the International Space Station (ISS) into a second home, has officially retired from NASA. The agency confirmed that her storied 27-year career concluded on December 27, 2025, marking the end of an era for one of the most decorated explorers in human history.
The announcement, released on January 20, 2026, comes while Williams is currently in India for a series of engagements. Speaking at an interactive session at the American Center in New Delhi on Tuesday, she reflected on her journey with her signature warmth, calling space her “absolute favorite place” and a perspective-shifting frontier that reminds us “we are just one.”
A Career of Firsts and Records
Since joining NASA in 1998, Williams has logged 608 days in space across three major missions, ranking second for cumulative time spent in orbit by any NASA astronaut. Her technical prowess and physical endurance set benchmarks that will guide the next generation of explorers heading to the Moon and Mars.
Her historic milestones include:
- A Spacewalk Pioneer: Completed 9 spacewalks totaling 62 hours and 6 minutes, the most of any female astronaut and fourth on NASA’s all-time list.
- The Orbital Marathon: Became the first person to run a marathon in space, famously participating in the 2007 Boston Marathon while orbiting the Earth.
- Single-Mission Endurance: Tied with Butch Wilmore for the sixth-longest single spaceflight by an American at 286 days, following her final mission involving the Boeing Starliner and SpaceX Crew-9.
Born in Euclid, Ohio, to a Slovenian mother and a father from Jhulasan, Gujarat, Williams has long been a bridge between cultures. During her session in New Delhi, she described her visit as a “homecoming,” sharing how she always looked for both Massachusetts and India from the windows of the ISS.
Her final mission was perhaps her most challenging; originally intended as an eight-day test flight for Boeing’s Starliner, technical issues extended her stay into a nine-month mission. Williams took the delay in stride, eventually taking command of the space station for Expedition 72 and returning to Earth in March 2025.
NASA Administrator Jared Isaacman praised Williams as a “trailblazer” whose leadership paved the way for the Artemis missions. “Her extraordinary achievements will continue to inspire generations to dream big and push the boundaries of what’s possible,” the agency stated.
As she hangs up her flight suit, the 60-year-old veteran emphasized that her success was never a solo flight. “I had an amazing 27-year career,” she said, “and that is mainly because of all the wonderful love and support I’ve received from my colleagues.”
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