???¢?¢?€š?¬?…?€?Virgin Galactic has announced that it has signed up more than 150 prospective space tourists. Richard Branson’s latest venture will haul millionaires into a brief sub-orbital flight using a fleet of SpaceShipTwo craft, the successor to the ship which claimed the Ansari X-Prize for commercial space flight in 2004.???¢?¢?€š?¬?‚??