By Joe Skipper and Steve Gorman CAPE CANAVERAL, Fla. (Reuters) -Elon Musk’s rocket company SpaceX launched four more astronauts into orbit on Wednesday en route to the International Space Station (ISS) for NASA, including a medical doctor turned spacewalker and a geologist specializing in Martian landslides. The SpaceX launch vehicle – a two-stage Falcon 9 rocket topped with a Crew Dragon capsule dubbed Freedom – lifted off shortly before 4:00 a.m. EDT (0800 GMT) from Florida’s Cape Canaveral. The three U.S. astronauts and their European Space Agency (ESA) crewmate were due to reach the space …