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Virgin Galactic's SpaceShip Two Relies on Carbon Composites 

The VSS Enterprise, the first of five SpaceShip Two commercial spacecraft, all with all-carbon-composite structures, returns to Earth in its first feather, or unpowered, flight on May 4, 2011.
(Source: Clay Center Observatory)

Virgin Galactic has been working on perfecting its second-generation SpaceShip Two prototype commercial spaceship, made primarily of carbon composites, for more than two years. Recently, Virgin Galactic test pilot David Mackay reportedly told attendees of the Next-Generation Suborbital Researchers Conference that the company hopes to perform suborbital tests of the spaceship during 2012.