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Fatal moment: The Virgin Galactic SpaceShipTwo plane is pictured above coming to pieces after a mid-air launch uses an experimental rocket fuel. It crashed to the ground in a remote region of California's Mojave Desert, killing one pilot and seriously injuring another
Fatal launch: SpaceShipTwo, left, is seen above moments after it detatched from WhiteKnightTwo, the twin-hulled airplane which carries the main vessel to 45,00ft before dropping it to make the sub-orbital space flight by itself
Pulling away: The rocket engine, using a new plastic-based polyamide fuel, can be seen starting to fire, right, as SpaceShipTwo streaks away from the carrier
Explo sion: Fragments of the plane plummeted to earth after it started to break apart, white smoke pouring, in the fatal accident
Decli ne and fall: How the plane climbed tens of thousands of feet before exploding and plummeting to earth
SpaceShipTwo was flying under rocket power after being released from its mothership - then Virgin tweeted that it had 'experienced an in-flight anomaly.'
Civilian aircraft and automobiles are mature technologies, (relatively mature).