The new twist comes after the Falcon 9's first stage finishes its main
job. Three minutes after launch, the second stage is due to separate and
fire up its own rocket engine to continue the trip. Then the first
stage is slated to relight its rocket engines and go through a complex
series of maneuvers to put itself safely down on a 300-foot-long,
170-foot-wide (91-by-52-meter) "autonomous spaceport drone ship" in the
Atlantic Ocean - NBC News.com
An
infographic by Jon Ross shows the key phases in the launch-and-landing
plan for SpaceX's Falcon 9 rocket during Friday's space station resupply
mission.