Sir Richard Branson
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Sir Richard Branson: 'We will honour test pilot's bravery'

Sir Richard Branson has said he is 'determined to find out what went wrong' with Virgin Galactic test flight in which one pilot died and the other was badly injured.

US investigators are beginning a probe into why a Virgin Galactic space rocket crashed over California's Mojave desert on a test flight.

The SpaceShipTwo aircraft exploded shortly after take-off on Friday.

Go to next video: Virgin crash investigation begins