https://www.reuters.com/article/us-space-exploration-race-factbox/factbox-bezos-branson-and-musk-who-is-winning-the-space-tourism-race-idUSKCN2EC2L2 >Three billionaire entrepreneurs - Jeff Bezos, Elon Musk, and Richard Branson - are each vying to usher in a new era of private commercial space travel.