CAPE CANAVERAL, Fla.—SpaceX launched three rich businessmen and their astronaut escort to the International Space Station on Friday for more than a week’s stay, as NASA joins Russia in hosting guests at the world’s most expensive tourist destination. It’s SpaceX’s first private charter flight to the orbiting lab after two years of carrying astronauts there for NASA. Arriving at the space station Saturday are an American, a Canadian and an Israeli who run investment, real estate and other companies. They’re paying $55 million apiece for the rocket ride and accommodations, all meals included. Russia has been hosting tourists at the space station — and before that the Mir station — for decades. Just last fall, a Russian movie crew flew up, followed by a Japanese fashion tycoon and his assistant. NASA is finally getting into the act, after years of opposing space station visitors. “It was a hell of a …