Photos: Atlas 5 rolls out for launch

Isolated camera views from various locations around Cape Canaveral and Kennedy Space Center show the United Launch Alliance Atlas 5 rocket lifting off Tuesday with the Orbital ATK Cygnus cargo freighter bound for the International Space Station.

A steel tube built as a stand-in for the core stage of NASA’s Space Launch System has arrived at the Kennedy Space Center for a series of rehearsals to hone the skills of technicians before the real rocket reaches the spaceport, an oft-delayed milestone that could still be a year or more away.

Boeing said Tuesday it is “making excellent progress” toward launching a second unpiloted test flight of its Starliner crew capsule to the International Space Station by the end of this year or in early January, setting the stage for the first Starliner demonstration mission with astronauts in mid-2021.