After 11 days together in orbit, Endeavour undocked from the international space station on Tuesday and began its trip home, leaving behind a larger and more energized outpost. The shuttle’s departure broke up the biggest off-the-planet gathering ever: 13 people in space. Seven astronauts headed back aboard the shuttle and six remained. The two spacecraft parted company 220 miles above the Indian Ocean. Endeavour took a lap around the space station for some impressive picture-taking before pulling away for good. The shuttle is aiming for a Friday touchdown.
