Video: A tribute to Space Shuttle Discovery

The final touchdown of space shuttle Discovery at Kennedy Space Center in Florida earlier this month marked the end of a remarkable career for the oldest of the surviving NASA shuttles. Since its first mission in 1984, Discovery has carried out 39 flights and traveled more than 143 million miles. It was the first shuttle to return to service after the Challenger and Columbia accidents, it carried the Hubble Space Telescope into orbit, has docked 13 times with the International Space Station and carried more than 250 crew members (including the oldest man in space - John Glenn).

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