He remained with the agency from 1990 to 2010. During his tenure, he became an astronaut and served as a mission specialist on STS-55 in 1993 and the groundbreaking STS-63 flight in 1995 – which ...
NASA's two stuck astronauts took their first spacewalk together Thursday, exiting the International Space Station almost eight months after moving in. Commander Suni Williams and Butch Wilmore ...
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