Peggy Whitson breaks the glass ceiling, lands among the stars
Peggy Whitson has spent more time in space than any other American. She was the first female, nonmilitary Chief of the Astronaut Office for NASA and the first woman commander of the International Space Station, but despite all her success, Whitson denies any claims of special talent or giftedness. Above all else, she said, hard work and perseverance brought her to the top.