Returned from Expedition 51, setting a 665-day spaceflight record on September 3, 2017.
Following her tenure on Expedition 51, Peggy Whitson returned to Earth on September 3, 2017, marking the conclusion of her third long-duration ISS mission. With a total of 665 days spent in space, she set a new record for the most cumulative time in space for any United States astronaut and any female astronaut globally, cementing her status as a pioneering figure in space exploration. This achievement further solidified her impact on the field and underscored her vital contributions to the extended study of human endurance and adaptation in extraterrestrial environments.