Flight Engineer Don Pettit is an American astronaut and a veteran of three spaceflights. He was born on April 21, 1955, in Silverton, Oregon. Pettit earned a Ph.D. in chemical engineering and worked for NASA as a flight engineer on the International Space Station (ISS), where he conducted various scientific experiments. During his missions, Pettit became known for his engaging communication style and ability to explain complex scientific concepts. He has spent over 370 days in space, contributing to research in fields such as fluid dynamics and materials science. His work has significantly advanced our understanding of science in microgravity.