Space officials expect to know later in the day on June 18, 2007, if space shuttle Atlantis should spend another day in space.
One more test is being done on a set of computers aboard the International Space Station, which will help determine if two Russian computers are ready to control the station’s orientation.
The computers crashed last week, but were back up and running over the weekend.
Atlantis is set to undock on June 19, and land June 21, in Florida.
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