With repairs still underway on Friday night, the Discovery team is preparing for the Sunday launch, if that will indeed be possible. The final assessment on whether the mission will be able to take off on Sunday will be made during a meeting scheduled to take place on Saturday at 1 p.m., followed by a prelaunch news conference two hours later.

The weather also seems to be favorable for a Sunday launch, but it gets worse for Monday and Tuesday, so Discovery will probably need to take a few more days before another attempt, if this one is postponed again.

NASA also revealed that if Discovery launches tomorrow, its mission will only last 13 days, and will only include 3 spacewalks, instead of four.

During this mission, the crew members will fly the S6 truss segment and install the final set of power-generating solar arrays to the International Space Station, which will support an extended crew of six on the ISS.

The seven members of the STS-119 mission to the International Space Station are pilot Tony Antonelli, Mission Specialists Joseph Acaba, John Phillips, Steve Swanson, Richard Arnold, Japan Aerospace Exploration Agency astronaut Koichi Wakata, and Commander Lee Archambault, in charge of the crew.

According to NASA, the astronauts have already undergone standard medical exams, and Commander Lee Archambault and pilot Tony Antonelli have already begun practicing landings in the Shuttle Training Aircraft. More details about how the launch date will be announced later today.