Mark Shuttleworth may not be the most famous South African tech entrepreneur in the world, but he has achieved something that Musk is yet to experience: a trip to space. The 45-year-old left this planet in 2002 on a "crazy" mission which we will come to later. Since then, he has established open source software firm Canonical and his own charitable foundation. Yet none of this would have been possible without the success of Thawte – a $575 million web security firm he founded and built from his parents' Cape Town garage. "For a while I think my parents thought it was just a phase I was going through, avoiding the choice of a real career," Shuttleworth tells Business Insider. "Pretty soon, though, the web security business was profitable, and they could see it was something I was very passionate about. They were supportive, even though it wasn't a traditional career path. South Africa was slow to get connected, so in 1995 there was very little bandwidth. I wanted to do something that was central to e-commerce but didn't require much connectivity, so I explored encryption and certification. It turned out that there were regulations in the US which prevented American companies from working effectively with strong encryption outside the USA. I focused on that gap to enable strong security for web transactions. Doing that well put me on the radar for the security group at Netscape [the early web browser series], which then created the opportunity to be a global certificate authority for the web." He continues: "One of the benefits of being small is that you can really focus on quality and purpose, whereas projects inside large companies are always buffeted by corporate requirements. So even though we were tiny — and there were some large organisations interested in certification — we were able to offer a higher quality assurance, faster, and cheaper, in most countries around the world." In 1999, Thawte was acquired by US tech company VeriSign for $575 million, leaving Shuttleworth — still only 26 — awash with cash. Just as Musk was turning his attention space-ward at the turn of the century, so Shuttleworth started to stargaze. Shuttleworth had always been interested in space, but his motive for visiting was not only natural fascination. "I was pretty certain that the next wave [of space travel] needed to be in the hands of entrepreneurs and businesspeople," he explains. "I wanted to show the space industry people that working with someone like me could be rewarding." Of course, this lack of commercial space travel meant there was no clear path Shuttleworth could follow to visit space. As a result, he decided to travel to Russia alone, armed with $20 million of his Thawte money and what he calls "broken Russian." "I went to Moscow and just started knocking on doors," he recalls. "I ended up negotiating with everyone, from the people who made the space suits, to the people who put cosmonauts in centrifuges, to the people who designed the rockets. My 'Sherpa' in Russia, if you like, was this sparky-eyed doctor who gave me medical tests. I couldn't just sign one contract to go to space. I bought a spacesuit before I had a clear path to being able to use it. One contract I signed was so I could be tested by the scientific institution that tested cosmonauts. So here was this bright medical biologist the same age as me [the astronaut Sergey Ryanzansky], whose dream back then was to fly in space, literally having me stuck and probed. Only at the very end did I do a deal with the group that could actually get me there." "Going to space at the end of all that was incredible, but as a life experience, the preparation was just as important," continues Shuttleworth. "For everybody, there's some equivalent. You go somewhere far away, you live under difficult conditions, you figure out what's possible – and you almost certainly won't regret it. It's worth just going out on a limb and finding out what you can do. In my case, the experience was total cultural immersion in a slightly crazy culture: the Russian space industry." In early 2002, Shuttleworth travelled on the Soyuz spacecraft to spend eight days aboard the International Space Station, where he helped with experiments related to genome and AIDS research, according to Forbes. "Does space travel require tenacity? Yes. Courage? Yes. Execution? Yes. But it's not like you need the US government to throw their weight behind it any more," he says of his experience and the potential for commercial space travel. In 2004, two years after his space adventure, Shuttleworth founded Canonical. Again, just as Shuttleworth's space trip was driven by a desire to shape the future of space travel, he wanted Canonical to shape open source. Fully funded by Shuttleworth (who had a net worth of $1 billion in 2017, according to Bloomberg), Canonical's flagship product is Ubuntu, an open source operating system with partners including Google Cloud and Amazon Web Services. "The technology wave the world is both feeding and riding at the moment is the wave of open source," Shuttleworth says. "For me, Canonical was about considering what open source means for technology and for society, and then trying to deliver open source in the most efficient, reliable way possible. We've seen super interesting startups [that use Ubuntu] coming out of Indonesia, India, South America, as well as the obvious places like Germany and the US." Back in 2004, both open source and cloud computing were very much in their infancy. Did people think Shuttleworth was crazy? "They always do!" he laughs. "At the time, open source was seen as a thing for weird, very quirky people, or people who had money. But, to me, open source felt like a better way to expand what was possible in software." Now Shuttleworth is thinking about taking private equity money for the first time as he looks to expand the business, according to an interview he did with TechCrunch in November. An IPO may also be on the cards one day, he added. "Ubuntu gives millions of software innovators around the world a platform that's very cheap, if not free, with which they can innovate," he adds. "It makes the future arrive faster. You don't have to be in Silicon Valley or be rich to use it."