Peggy Whitson returned to earth on September 3, 2017. She set a new record of 665 days in space, including 288 days during her most recent stint on the International Space Station. She is now the American and any woman to spend the most time in space. She served on three missions on the space station. She set other space records as well. She is the oldest female astronaut at age 57, and she is the first woman to have commanded the International Space Station twice. The biochemist landed in a Soyuz capsule in Kazakhstan. Older children can learn more at: Peggy Whitson.