7 April 2010 --- NASA astronaut Dorothy Metcalf-Lindenburger (left) and Japan Aerospace Exploration Agency astronaut Naoko Yamazaki appear especially happy to be aboard the International Space Station shortly after the Discovery docked with the orbital o

7 April 2010 --- NASA astronaut Dorothy Metcalf-Lindenburger (left) and Japan Aerospace Exploration Agency astronaut Naoko Yamazaki appear especially happy to be aboard the International Space Station shortly after the Discovery docked with the orbital outpost. Each of the two mission specialists is enjoying her first trip into space, and the two are joined by two other women and nine men for several days of joint activities as work continues on the station.