SpaceX’s Dragon capsule delivered four astronauts, including two Americans, to the International Space Station (ISS) on Saturday, restoring the orbiting lab to its full seven-person crew after NASA carried out its first medical evacuation from orbit in January. In January, NASA brought back four astronauts after a medical issue emerged on January 7, one day before a planned spacewalk that was abruptly canceled. The ISS is a global partnership of five space agencies representing 15 countries. It