Specifically, SpaceX wants the extra pads to run ground landing tests for the Falcon Heavy rocket, a new platform with three cores, each equivalent to a single Falcon 9. SpaceX is calling it the world's most powerful operational rocket, and with the power to launch 54 metric tons into orbit, it just may be -- but the company will need to get it off the ground first. Building the new platforms is one of the first steps to accomplishing that goal. The company says it may land the rocket at sea to start, however. Either way, we'll be watching when the Falcon Heavy takes its first flight later this year.