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KENNEDY SPACE CENTER, Fla. -- A perfect launch on a perfect Florida day! Space Shuttle Endeavour, with its crew of five, scatters billows of steam and smoke as it lifts off at 12:43:40 p.m. EST on mission STS-99. Employees and visitors watch intently from across the turn basin. Known as the Shuttle Radar Topography Mission (SRTM), STS-99 will chart a new course to produce unrivaled 3-D images of the Earth's surface. The result of the SRTM could be close to 1 trillion measurements of the Earth's topography. The mission is expected to last 11days, with Endeavour landing at KSC Tuesday, Feb. 22, at 4:36 p.m. EST. This is the 97th Shuttle flight and 14th for Shuttle Endeavour