SpaceShip 2 Crash Probed by NTSB

Killed one, injured another.

MOJAVE, Calif.—Federal aviation crash investigators were expected here Saturday to open the probe into the cause of the crash of Virgin Galactic's tourism spaceship, which claimed the life of one pilot and badly injured the other.

Also due at the airport Saturday is Virgin Group President Richard Branson, the British billionaire and adventurer who had become the public face of the space venture. He tweeted a reassuring message to his staff and said he was on his way.