Don Pettit, Astronaut (EG7)
April 2013: Don Pettit, combining a love for music and science, explains several tone wave experiments he conducted while in zero gravity on the Space Station. Pettit is an American chemical engineer and a NASA astronaut - he is a veteran of two long-duration stays aboard the International Space Station, one space shuttle mission and a six-week expedition to find meteorites in Antarctica.
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