OWNERS
Virgin Galactic is a joint venture between Richard Branson's Virgin Group Ltd. and Aabar Investments PJS, a state-backed investment company in the oil-rich United Arab Emirates.
Aabar said it paid about $US280 million ($A302.95 million) for a 32 per cent stake in Virgin Galactic's holding company in exchange for the chance to launch tourism and research flights from the Emirates.
BIG DREAMS
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Branson and Virgin Galactic have repeatedly stated ambitious goals for the beginning of suborbital passenger flights, followed by delays in developing and testing the rocket ship.
In 2008, Branson predicted that the maiden flight would come within 18 months.
In interviews last month, Branson said the first space flight could happen before Christmas and that he and his son hoped to fly on the first passenger flight, perhaps in March.
That goal, too, seems unlikely after Friday's accident, which happened minutes after SpaceShipTwo separated from the plane that carried it high into the atmosphere.
Galactic said late Friday the cause was unknown.
EXTENSIVE TESTING
The spacecraft was built by Scaled Composites, a business founded by famous aerospace designer Burt Rutan.
Virgin Galactic said Friday's test flight marked the 55th time that SpaceShipTwo had flown on its own and that WhiteKnightTwo had flown 173 times.
Company officials said the long development and testing period was all for safety.
"Customers are eager to fly, but they know we'll fly them when we feel ready," the CEO, George Whitesides, said in September.
BIG BOOKINGS
Seats on Virgin Galactic cost $US250,000 ($A270,490) each.
The company said this month that it has signed up about 700 passengers who have put down more than $US80 million in deposits.
Galactic hopes to eventually sell point-to-point flights similar to airlines - New York to Australia in 40 minutes, for example, Branson suggested.
STAR POWER
As Galactic's chief salesman, the 64-year-old, shaggy-haired Branson is among the world's most recognisable and flamboyant entrepreneurs.
He owns a private island in the Caribbean, and his Virgin Group has holdings around the globe in airlines, entertainment, telecommunications and other industries.
Galactic's passenger list is dotted with celebrities, including actor Ashton Kutcher and singer Justin Bieber.
