Last night, an Axiom Space mission carrying a private crew blasted off from NASA’s Kennedy Space Center in Florida, heading toward the International Space Station. The crew of four, led by former NASA astronaut Peggy Whitson, flew aboard a SpaceX Dragon spacecraft and docked with the ISS at about 9:12 a.m. Eastern time this morning. It’s the second time Axiom has ferried paying customers to the ISS. Last year’s inaugural flight was a milestone for space tourism. This time, it’s a glimpse at the future of the space station itself.