Musk—who has a history of setting unrealized goals for his companies—says he wants to send humans to Mars by 2029, though he says 2031 may be more likely.

SpaceX successfully launched its Falcon 9 rocket, carrying a crew to the International Space Station (ISS) as part of a mission to bring two astronauts back home. This event marks a significant step in SpaceX’s ongoing endeavors to support space exploration and human spaceflight.

The billionaire says an unmanned mission by his SpaceX "Starship" vehicle will be followed by human landings as early as 2029.