An extraordinary ballet was danced through the skies over central Florida on Tuesday, as SpaceX's Falcon Heavy rocket passed its first test launch with (mostly) flying colors. With its highly anticipated first flight behind it, the Falcon Heavy is now the world's most powerful operational rocket by a factor of two, capable of lifting 140,000 pounds of cargo into low-Earth orbit. Only the Saturn V rocket that sent humans to the moon has lifted so much, so far. "I'm still trying to absorb everything that happened. It seemed surreal to me," SpaceX CEO Elon Musk said in a post-launch press briefing on Tuesday.