Shuttle Atlantis prepares to return home

A revived set of crucial computers aboard the international space station underwent one more test yesterday before they are given a clean bill of health so shuttle Atlantis can return home.

The test will help determine if two Russian computers are ready to control the space station's orientation as Atlantis managers decide whether the shuttle should spend another day at the outpost.

During a computer meltdown last week, the shuttle's thrusters were used to help the station maintain its position. The station's thrusters have not been used since.