Forecasters said there was a 90 percent chance that the weather would stay clear in Florida for Discovery to blast off tonight.
The shuttle's crew was scheduled to deliver the last set of solar wings to power the international space station. There's also a part to help process urine for the station's water-recycling system.
Experts at space.com said there was a good chance that people could have seen the space shuttle from our area. The glow of the shuttle's engines was expected to be visible all along the east coast from launch time, set for about 9:20 p.m., until the main engines cut off a little more than 8 minutes later.
RELATED: More information about the space shuttle visibility
VIDEO: NASA online television broadcasts.
NASA: http://spaceflight.nasa.gov
Information from Associated Press wire reports were used for this story.
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