Live coverage: Atlas 5 blasts off from California

This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the SBIRS GEO Flight 3 satellite for U.S. military infrared reconnaissance. Launch is scheduled for Thursday at 7:46 p.m. EST (0046 GMT).

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.

Boeing officials said Monday the company’s Starliner crew capsule will fly a second time without astronauts after software problems and other issues plagued a first test flight in December, preventing the ship from reaching the International Space Station.