After nearly two decades of effort, Elon Musk’s aerospace company, SpaceX, successfully launched its first crew into orbit on Saturday, ushering in a new age of human spaceflight in the US. Astronauts Bob Behnken and Doug Hurley lifted off from Florida’s Kennedy Space Center to the International Space Station. The flight marked the first time astronauts have launched into orbit from American soil in nearly a decade, and SpaceX is now the first company to send passengers to orbit on a privately made rocket.