INTERNATIONAL SPACE STATION (AP) -- The crew of shuttle Discovery can start getting ready to come home.
The Discovery astronauts have finished their final chores at the international space station, including testing the 33-foot robotic arm on the new Japanese science lab. Shuttle commander Mark Kelly marveled at the low number of problems they've had -- all of them minor.
The new robotic arm will be used to handle outdoor science experiments once the final section of the lab -- a porch -- is launched next year.
The doors between Discovery and the space station will be closed tomorrow, with the shuttle undocking Wednesday. It's scheduled to land in Florida Saturday.