21 hours, 38 minutes rocks primary mission goal 21 hours, 38 minutes 21 hours and 38 minutes 21 hours and 38 minutes 21 hours, 38 minutes 21 hours and 38 minutes returned 21 hours and 38 minutes 21 hours, 38 minutes primary objective 21 hours, 38 minutes Apollo 11, 21 hours, 38 minutes lasted only 195 hours total 21 hours, 38 minutes 21 hours and 38 minutes 21 hours, 38 minutes 21 hours, 38 minutes 21 hours, 38 minutes 21 hours, 38 minutes 21 hours, 38 minutes 21 hours and 38 minutes 21 hours, 38 minutes