Jason 3 pre-launch news conference

SpaceX is targeting launches March 6 and March 11 for its next two missions after swapping an upper stage for its next Falcon 9 rocket with another stage already being readied for liftoff at Cape Canaveral.

SpaceX rolled a fully-assembled Falcon 9 booster out of its hangar and lifted it on top of a launch pad Friday for the first time since an explosion grounded the commercial rocket last year, setting the stage for a one-second launch window Saturday to take off from California’s Central Coast and deploy the first 10 satellites in orbit for a $3 billion upgrade to Iridium’s globe-spanning message relay network.

SpaceX has released video from an Aug. 30 launch captured by a camera mounted aboard the first stage of a Falcon 9 rocket, showing the booster’s climb into space from Cape Canaveral and a fiery return to the Florida spaceport, where SpaceX will ready the vehicle for another mission.