SpaceX launched the Falcon Heavy Rocket from the Kennedy Space Center in Florida on Tuesday. Falcon Heavy has 24 experimental satellites. The company called it one of the most difficult launches it has attempted. The center booster missed its mark during landing, crashing in the Atlantic ocean. The mission, dubbed Space Test Program 2 (STP-2), is the third one for the Falcon Heavy rocket. It’s described as the most powerful launch system in the world.