Live coverage: Orion lands in Pacific

The most powerful variants of the Atlas 5 and Delta 4 rockets have been purchased by the Air Force to launch intelligence-gathering spacecraft for the U.S. government, and NASA has bought an Atlas 5 to deploy a critical polar-orbiting weather satellite.

A countdown dress rehearsal and rocket fueling exercise was completed at Cape Canaveral for next month’s launch of NASA’s Orion crew module atop a United Launch Alliance Delta 4-Heavy booster.

SpaceX successfully launched an oft-delayed Falcon 9 rocket mission at 6:35 p.m. EST (2335 GMT) Friday after more than a week of delays caused by issues with super-chilled liquid oxygen propellant, a boat the strayed into restricted waters offshore Cape Canaveral, and extreme upper level winds. The experimental recovery of the first stage on an ocean-going barge was not a success.