Endeavour undocked from the orbiting lab close to midnight Sunday. The shuttle took a victory lap around the station. Then it hung around another few hours, testing navigation equipment intended for a future interplanetary-traveling spacecraft.
The space station astronauts said Endeavour "looks real nice out there." They beamed down video of the departing shuttle Monday morning, the last shot ever of Endeavour in orbit.
NASA's youngest shuttle is due back in Florida early Wednesday. Its next stop after that will be a museum in California for what many consider to be an early retirement.