Indian-origin NASA astronaut Sunita Williams retired effective December 27, 2025, after a 27-year career. Her final mission stretched over nine months. Williams logged 608 days in space, nine spacewalks totaling 62 hours, commanded the ISS, and helped advance science enabling Artemis Moon and Mars missions, NASA said. She inspired generations worldwide with historic achievements.

Indian-origin NASA astronaut Sunita Williams took retirement on Tuesday (January 20). The retirement, announced by the space agency, came into effect on December 27, 2025. Notably, Williams’ last space mission, which was scheduled for 10 days, extended for over nine months.
“Suni Williams has been a trailblazer in human spaceflight, shaping the future of exploration through her leadership aboard the space station and paving the way for commercial missions to low Earth orbit,” said NASA Administrator Jared Isaacman.
“Her work advancing science and technology has laid the foundation for Artemis missions to the Moon and advancing toward Mars, and her extraordinary achievements will continue to inspire generations to dream big and push the boundaries of what’s possible. Congratulations on your well-deserved retirement, and thank you for your service to NASA and our nation,” NASA said in a statement.
What Sunita Williams Said On Her Retirement:

