Just a few years ago, the notion of space flight for all was a pipe dream, if only because of the costs involved. So only a few super-rich enthusiasts have been able to buy their way into the exalted ranks of cosmonauts and astronauts. In 2001, the American businessman Dennis Tito shelled out 20 million dollars to travel with the Russians to the International Space Station (ISS). In 2002, the South African Mark Shuttleworth lifted off, also in a Soyuz rocket, after paying the same ticket price. But that was about the end of it.