NASA's Most Jet-Setting Shuttle RetiresS

NASA's most-flown shuttle, Discovery, landed for the final time today at the Kennedy Space Center in Florida. Over the course of 39 missions spanning the course of 26 years, Discovery traveled 148,221,665 miles. Career highlights: Launched the Hubble telescope, delivered new modules to the International Space Station. NASA's other two remaining space shuttles—Endeavour and Atlantis—are scheduled for the glue factory later this year. [ABCNews, Image of Discovery above the northwest coast of Morocco via AP]