By Rob Lenihan The four-person crew is expected to arrive at the International Space Station on Saturday morning. SpaceX, Tesla (TSLA) – Get Tesla Inc Report CEO Elon Musk’s aerospace company, successfully launched a crew of four astronauts on Friday, April 8, in the first all-private mission to the International Space Station. ‘Liftoff of Falcon 9 and Dragon!’The company’s Dragon spacecraft launched atop a Falcon 9 booster from NASA’s Kennedy Space Center in Cape Canaveral, Florida. The roughly 10-day mission is being conducted by the Houston-based commercial aerospace company Axiom Space. Th…