Live coverage: Delta 2 launches

Weather conditions at the surface will likely be favorable for the launch of a SpaceX Falcon 9 rocket Wednesday from Cape Canaveral, but upper level winds may pose a roadblock for the start of the company’s next space station resupply mission. SpaceX is targeting liftoff of the Falcon 9 from pad 40 at 12:51 p.m. EST (1751 GMT) Wednesday.

The 32-story-tall mobile service tower at the Delta 4’s launch pad at Vandenberg Air Force Base in California was retracted away from the rocket Thursday in advance of a planned liftoff with a top secret National Reconnaissance Office payload.

SpaceX teams working at Vandenberg Air Force Base in California were finalizing preparations Tuesday ahead of the launch of a Falcon 9 rocket Wednesday carrying a trio of Canadian-built radar observation satellites into orbit.