With the countdown under way, the launch team is targeting a 6 a.m. rollback of the rotating service structure. The launch window opens at 8 a.m. and extends until noon. At present, the most likely T-0 may come between 8:15 and 8:30 a.m.

As the sun rises over Launch Pad 39B at NASA's Kennedy Space Center in Florida, the rotating service structure and the arms of the vehicle stabilization system have been retracted from around the Constellation Program's 327-foot-tall Ares I-X rocket, resting atop its mobile launcher platform, for launch. Credit: NASA/Kim Shiflett
Just as yesterday, the weather will be the question of the day. The forecast is for 60 percent “no-go” once again. Overnight, weather moved through the area producing rain and lightning. There were four strikes near the launch pad, and vehicle testing is running concurrently with the count to ensure there are no issues as a result. So far, all results are good. The closest strike was .44 miles away from the pad.
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