A Tesla roadster launched from the Falcon Heavy rocket with a dummy driver named 'Starman' heads towards Mars.
Photograph by Space X
Elon Musk, founder of SpaceX, poses with the company's Falcon Heavy rocket at Launch Pad 39A at NASA's Kennedy Space Center in Cape Canaveral, Florida, on February 5, 2018.
Photograph by Todd Anderson, The New York Times
Jeff Bezos, chief executive officer of Amazon.com, speaks during the 32nd Space Symposium in Colorado Springs on April 12, 2016. Bezos founded Blue Origin, which aims to put a colony on the Moon.
Photograph by Matthew Staver, Bloomberg, Getty Images
At an anniversary party in Australia for one of his companies, Richard Branson announced a competition that would offer the winner a trip to space on Virgin Galactic.
Photograph by Lisa Maree Williams, Getty Images