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Just over one hour and 46 minutes after launch from Cape Canaveral Air Force Station in Florida, NASA’s Tracking and Data Relay Satellite (TDRS)-K spacecraft separated from the Centaur upper stage and achieved its preliminary orbit. Over the next 10 days, the TDRS rocket thrusters will circularize the geosynchronous orbit 22,300 miles above Earth. Here's a spectacular image of tonight's launch.