Sir Richard Branson has vowed to continue his space tourism venture despite the fatal crash of a Virgin Galactic rocket ship in the US. One pilot died and the other was badly injured when SpaceShipTwo exploded in California's Mojave Desert on Friday. Virgin had hoped to launch commercially in 2015. It has already taken more than 700 flight bookings at $250,000 (£156,000) each, with Mr Branson pledging to travel on the first flight. Will this crash set back space tourism?
