Explosion at Scaled Composites kills 2, injures 4

Animats writes: Details are scant at this time, but a explosion at the Scaled Composites rocket test facility has killed two people and seriously injured four more. The Los Angeles Times reports that the explosion was "ignited by a tank of nitrous oxide".

This is Burt Rutan's facility, and the home of SpaceShip One and Virgin Galactic spacecraft development.