Sir Richard Branson unveils WhiteKnightTwo

This is more celebsinspace than celebsonholiday, but do you really care when it's about something as cool as space tourism!?!?

Virgin Galactic - Sir Richard Branson's space company - unveiled its mothership to the world yesterday at a ceremony in California's Mojave Desert, four years after SpaceShipOne became the first private manned rocket to reach space.

Below: Richard Branson and Burt Rutan, President of Scaled Composites wave from the window of White KnightTwo

The aircraft - named WhiteKnightTwo - will be used to launch a yet-to-be-built spaceship out of the atmosphere

So far, more than 250 customers have paid $200,000 or put down a deposit for the chance to be one of Virgin Galactic's first space tourists.

Below: Former Apollo Astronaut Buzz Aldrin and Richard Branson speak to the media