Four astronauts returned to Earth on November 8, riding home with SpaceX to end a 200-day space station mission that began last spring. Their capsule parachuted into the Gulf of Mexico off the coast of Pensacola, Florida, in darkness. Their homecoming - coming just eight hours after leaving the International Space Station - paved the way for SpaceX's launch of their four replacements as early as November 10. The newcomers were scheduled to launch first, but Nasa switched the order because of bad weather and an astronaut's undisclosed medical condition. The welcoming duties will now fall to the lone American and two Russians left behind at the space station.