Leroy Chiao is a former NASA astronaut and International Space Station commander. He is a a professional international speaker, and a co-founder and the CEO of OneOrbit, providing keynotes and training to companies and schools. A veteran of four space missions, Dr. Chiao most recently served as Commander and NASA Science Officer of Expedition 10 aboard the International Space Station. He has logged over 229 days in space - over 36 hours of which were spent on spacewalks.