NASA says there is a 70 percent chance of favorable weather for a rocket launch set for Wednesday night.
A United Launch Alliance Atlas V rocket will carry a Boeing Defense satellite into space. The launch is scheduled to happen at the Cape Canaveral Air Force Station at 8:48 p.m. NASA says there is a 40 minute window for the launch, until 9:28 p.m.
Wednesday's launch will be the first for ULA in 2013.
The Atlas V rocket is carrying Boeing's Tracking Data Relay System (TDRS). NASA will use the TDRS satellite "to provide around-the-clock communications to [NASA's] most critical missions in low-earth orbit."
The TDRS project was established by NASA in 1973. The newest satellite will replace aging equipment to expand and maintain the TDRS network.