SpaceX's Falcon Heavy megarocket was rolled out on the launchpad Thursday, as the company prepares for the rocket's maiden flight, which is scheduled for next month. NASA confirmed today that the Falcon Heavy has been moved to Launchpad 39A at the Kennedy Space Center in Florida. The rocket will undergo various tests before it takes off; SpaceX has not yet confirmed a launch date. If all goes well, the Falcon Heavy will be the most powerful rocket in operation, with nearly twice the lifting power of the next-most powerful rocket, according to NASA. It will be the most powerful rocket to launch from Launch Complex 39A since NASA's Saturn V, which sent astronauts to the moon, according to NASA.