SpaceX CEO Elon Musk unveils SpaceX's new seven-seat Dragon V2 spacecraft, in Hawthorne, Calif., on May 29, 2014. Robyn Beck/AFP via Getty Images
Tesla Inc. and SpaceX CEO Elon Musk aims to build 100 starships per year and send one million people to Mars by 2050.
He believes close to a million people are needed on Mars to ensure enough population for the necessary work to survive on the Red Planet.
