Leroy Chiao (born August 28 1960) is an American engineer former NASA astronaut entrepreneur motivational speaker and engineering consultant. Chiao flew on three shuttle flights and was the commander of Expedition 10 where he lived on board the International Space Station from October 13 2004 to April 24 2005. He is also a co-author and researcher for the Advanced Diagnostic Ultrasound in Microgravity Project.
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