why did the shuttle returns after teh 14-day mission in the space?
It was piloted by U.S. Navy commander Ken Ham. It delivered the Kibo science module to the space station, along with parts to fix the malfunctioning toilet. They exchanged crew members and supplies for the station, and returned to Earth, all in 14 days. The new module will allow unique scientific experiments to be done that cannot be done on Earth. There were no major glitches on the flight. Discovery returns to the station in Novemeber to install additional truss segments. The crew submits to medical exams both before and after the flight to check the effects of microgravity and radiation on their health. I hope this helps. Sources: http://www.foxnews.com/story/0,2933,367002,00.
