The VSS Unity is a SpaceShipTwo vehicle designed to carry six commercial passengers and two pilots into space, where they will experience 5 minutes of weightlessness before gliding back down to Earth. "It was a thrill from start to finish," the craft's chief pilot, Dave Mackay, said in a statement about today's flight. "Unity's rocket motor performed magnificently again, and Sooch [co-pilot Mike Masucci] pulled off a smooth landing. This was a new altitude record for both of us in the cockpit, not to mention our mannequin in the back, and the views of Earth from the black sky were...