Who are the billionaires who have travelled to space so far?

Billionaire Charles Simonyi, who built the first versions of Microsoft Office, has travelled to the International Space Station twice, according to Forbes. Canadian businessman Guy Laliberté travelled to space in September 2009, and on July 11, 2021, British billionaire Richard Branson travelled to space. Notably, American 'millionaire' Dennis Tito became the 'world's first space tourist' in 2001.