. "The Scaled Composites SpaceShipThree (SS3) was a mid-2000s proposed spaceplane to be developed by Virgin Galactic and Scaled Composites, ostensibly to follow SpaceShipTwo."@en . "The Scaled Composites SpaceShipThree (SS3) was a mid-2000s proposed spaceplane to be developed by Virgin Galactic and Scaled Composites, ostensibly to follow SpaceShipTwo."@en . . . . . . . . "SpaceShipThree"@en . . . . . .