For some, flying into space will remain only a dream, but for Charles Simonyi, this is a dream come true for the second time. The man who paid $20 million to go into orbit in 2007 is now getting ready for a second trip into space, and a $30 million hole in his holiday budget.

As he became not only one of the few tourists to actually afford a space trip, but also the only one who will repeat the experience, Simonyi is the perfect example that space tourism is developing, offering one (or two) of a lifetime experiences.

As Space Adventures, the company gained worldwide fame seven years ago, when it sent its first tourist into space, Dennis Tito, is now proud to announce that in spring 2009, Charles Simonyi will experience a spring mission on the International Space Station.

Simonyi, the computer software developer who worked on Microsoft’s Excel and Word applications and now owns his own company, Intentional Software, is willing to pay a reportedly $30 million fee for a second space flight (the extra $10 million are of course caused by increased prices compared to last year).

According to Space Adventures, Simonyi will train with the Soyuz TMA-14 crew before reaching the International Space Mission in spring 2009. In the meantime, on October 12, another tourist is scheduled to launch to the ISS, Richard Garriott, son of NASA astronaut Owen Garriott.

As Space Adventurers CEO Eric Anderson explained, the fact that they already have a repeat orbital client demonstrates that the world is ready to engage in a truly amazing experience. Simonyi is an example that the marketplace is even larger than previously anticipated, and that there are potential clients out there willing to fly on multiple occasions, he added.