Space shuttle Endeavour and its six astronauts closed out the last major construction mission at the International Space Station with a smooth landing in darkness that struck many as bittersweet. Only one flight remains for Endeavour, the baby of the shuttle fleet. Overall, just four missions remain.
During the two-week, 5.7 million-mile (9.2 million-kilometer) journey, commander George Zamka and his crew delivered and installed a new space station room, Tranquility, and a big bay window with commanding views of Earth. Their success resulted in the virtual completion of the space station, described by NASA as 98 percent finished. (18 images)