Three women are aboard Discovery, and another already is at the space station, making for an unprecedented foursome. Once combined, the shuttle and station crews will number 13: eight Americans, three Russians and two Japanese. American Tracy Caldwell Dyson arrived at the orbiting space station on Sunday aboard a Soyuz spacecraft with two Russian cosmonauts. Also there are mission specialists Dottie Metcalf-Lindenburger, 34; Stephanie Wilson, 43; and Naoko Yamazaki, 39, an astronaut with the Japanese space agency. Rounding out the Discovery crew are mission commander Alan Poindexter, 48; co-pilot Jim Dutton, 41; mission specialist and spacewalker Rick Mastracchio, 50; and fellow spacewalker Clay Anderson, 51.
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