Watch a replay of the launch of a Japanese navigation satellite

Watch a 4K video replay of the launch of a SpaceX Falcon 9 rocket and Cargo Dragon spacecraft Dec. 6 on a resupply mission to 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.

Watch a replay of the launch of an Atlas 5 rocket carrying the $1.2 billion SBIRS GEO Flight 4 satellite into orbit.