Billionaire Charles Simonyi, 58, who led development of Microsoft's Word,
lifted off from the Baikonur space station in Kazakhstan at 1731 GMT.
The $20m ride will make him the 450th person to enter orbit and by his own admission "the first nerd in space".
American businesswoman and lifestyle guru, Martha
Stewart, was there to wave her friend off on the 12-day trip.
You have ask yourself the question, with this many people ready to fork up $20mil to get their chance to see the great beyond, I wonder just how big the market will be when they get prices down to $250,000?
The irony still remains, that the country that was once home to marxism and communism, has become the one country in the world that has embraced capitalism in space.
This bodes well for the future of space colonization and the space tourism industry.