Veteran NASA astronaut Sunita Williams has officially retired after an illustrious 27-year career, marking the end of one of the most remarkable journeys in human space exploration. NASA confirmed that her retirement took effect on December 27, 2025.
Currently visiting India, Williams recently interacted with students and faculty at the Indian Institute of Technology (IIT) Delhi, where she shared insights from her space missions and reflected on the future of human spaceflight. IIT Delhi also shared pictures from the event, showing Williams in her iconic astronaut suit.
Over her career, Williams spent a cumulative 608 days in space, the second-highest total by any NASA astronaut. She completed nine spacewalks, clocking 62 hours and 6 minutes outside the spacecraft—the most by any female astronaut and fourth-highest overall in NASA history. She also made history as the first person to run a marathon in space.
Speaking at IIT Delhi, Williams described human space exploration as a powerful example of global collaboration. She spoke about her most recent mission aboard Boeing’s Starliner, which was initially planned for eight days but extended to nine months due to technical issues. Along with fellow astronaut Butch Wilmore, she joined Expeditions 71 and 72 and safely returned to Earth in March 2025.
Williams also spoke warmly about her connection to India and her childhood influences. Recalling a memorable moment aboard the International Space Station, she said opening a packet of Indian food in space was unforgettable. “Sharing it with my crewmates made it special. Food has a way of bringing people together, even in orbit,” she said.
Explaining life in microgravity, Williams noted how the absence of gravity transforms materials, medicine, and even human behaviour. “When you take gravity away, you begin to understand things differently. That understanding helps us learn more about ourselves and the universe,” she explained.
Sunita Williams has strong Indian roots. Her father, a neuroanatomist, was born in Jhulasan village in Gujarat’s Mehsana district, before moving to the United States. Her mother, Bonnie Pandya, is of Slovenian origin.
At another event titled “Eyes on the Stars, Feet on the Ground” held at the American Center in India, Williams reflected on how seeing Earth from space reshaped her worldview. “Looking at this beautiful, living planet makes differences between people seem meaningless. It reminds you that we are all one,” she said.
