It's about 100 years since the pioneering days of aviation and 25 years since the first Space Shuttle flight. Now there's a new breed of 'magnificent men in their space machines' - from the ranks of amateur enthusiasts and rich entrepreneurs. Former Shuttle astronaut Jeff Hoffman meets them and investigates The X-Factor that could lead to the next space travel revolution.
'Book now for your first spaceflight!' That's the call from innovative companies including Sir Richard Branson's Virgin Galactic. Already, a few millionaires have hitched a ride to the International Space Station. Now, the ticket price may be coming down. Space Shuttle astronaut Jeff Hoffman investigates this boom in space tourism and asks if its a repeat of the pioneering days of aviation 100 years ago.