Live coverage: Atlas 5 countdown and launch journal

United Launch Alliance moved its next Atlas 5 rocket off its Florida launch pad Wednesday for inspections after a cooling duct unexpectedly disconnected before a planned countdown rehearsal to prepare for liftoff next month with the joint U.S.-European Solar Orbiter mission. The roll back to the Vertical Integration Facility at Cape Canaveral’s Complex 41 launch pad could delay Solar Orbiter’s liftoff, which was scheduled for Feb. 5

Launching the second pair of Geosynchronous Space Situational Awareness Program satellites for the U.S. military, a United Launch Alliance Delta 4 rocket thundered away from Cape Canaveral today at 12:52 a.m. EDT (0452 GMT).

NASA announced Monday it will order at least six reusable Orion crew capsules from Lockheed Martin for $4.6 billion to fly astronauts to the vicinity of the moon in the 2020s, and the agency said it plans to purchase hardware for up to 12 Orion vehicles by 2030.