After a delayed launch and one aborted delivery attempt, SpaceX's caution paid off Thursday when its Dragon capsule stuffed full of food, equipment, and experiments successfully docked with the International Space Station (ISS). Now on its 10th re-supply mission, the private space company has become an essential part of the supply lines supporting an increasingly intricate space operation. After a GPS error scuttled its first docking attempt Wednesday, the Dragon capsule smoothly slipped close enough to the ISS for the space station's robotic arm to snag the craft early Thursday morning, along with the 5,500 pounds of goodies on board. "Looks like we've got a great capture," radioed space station commander Shane Kimbrough. In addition to a much needed food refresh, the capsule also contains more than 250 science experiments.