A Russian cosmonaut, a Japanese billionaire and his production assistant rocketed into orbit Wednesday, chased down the International Space Station and successfully docked to kick off a 12-day visit, the first by paying “space tourists” in more than a decade. The mission serves as a stepping stone of sorts to a much more ambitious flight by Yusaku Maezawa, the founder of Zozotown, the largest online fashion retailer in Japan. He is working with SpaceX to charter a flight around the moon aboard the company’s Starship rocket when testing is complete.