A rocket capsule with a dummy on board has been blasted off for the International Space Station.
Dubbed 'Crew Dragon', it's been put together by SpaceX - and it marks a key milestone for Elon Musk’s company.
It's part of America's plan to start launching astronauts from home soil again.
Since the end of a US programme nearly a decade ago, the country's had to rely on Russia to put men and women into orbit.
NASA is aiming to resume human spaceflight later this year.
But Elon Musk has a more ambitious target, saying "we should have a permanently occupied human base on the moon, and send people to build a city on Mars".
