Live coverage: Ten Iridium satellites successfully deployed by Falcon 9 rocket

SpaceX’s first Falcon Heavy rocket is expected to roll out to pad 39A at NASA’s Kennedy Space Center for the first time next month for a hold-down firing of its 27 Merlin main engines, but the mega-rocket’s inaugural test launch will slip into January, officials confirmed Tuesday.

SpaceX’s Dragon cargo capsule arrived at the International Space Station early Sunday with 3.5 tons of supplies and experiments, including an inflatable room to test out technologies for future use on deep space missions. British astronaut Tim Peake captured Dragon with the robotic arm at 7:23 a.m. EDT (1123 GMT).

Ten commercial Earth-imaging satellites are mounted on top of a Rocket Lab Electron launcher for liftoff Wednesday from New Zealand.