As Sir Richard Branson, Jeff Bezos and Elon Musk compete for space travel supremacy, CBS News space contributor Bill Harwood joins CBS News senior correspondent Mark Strassmann to discuss how the billionaires and their space programs - Virgin Galactic, Blue Origin and SpaceX - stack up. They also discuss whether space travel will become attainable for the average American.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.