Peggy Whitson

Peggy Annette Whitson is an American biochemistry researcher, and astronaut working for Axiom Space. She retired from NASA in 2018, after serving as the 13th chief of the Astronaut Office. Over all her missions, Whitson has accumulated a total of 695 days in space, more than any other American or woman.

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Image: NASA, Joel Kowsky · Public domain