Photos: Atlas 5 launches SBIRS GEO Flight 3

The Centaur upper stage destined to send Boeing’s CST-100 Starliner crew capsule into orbit on its first unpiloted test flight next year has arrived at Cape Canaveral after a sea journey aboard United Launch Alliance’s Mariner transport ship.

SpaceX transferred the first astronaut-ready Crew Dragon spacecraft Friday night from a fueling facility at Cape Canaveral Air Force Station to pad 39A at NASA’s Kennedy Space Center, where teams will join the capsule with its Falcon 9 launcher for liftoff later this month.

Two days after lifting off aboard a SpaceX Falcon 9 rocket from the Complex 40 launch pad at Cape Canaveral Air Force Station, a commercial Dragon supply ship loaded with more than 4,800 pounds of supplies and experiments arrived Sunday at the International Space Station. Capture of the robotic cargo craft occurred at 5:57 a.m. EST (1057 GMT).