A sky is the perfect setting behind Space Shuttle Endeavour as it hurtles into space.

A clear blue sky is the perfect setting behind Space Shuttle Endeavour as it hurtles into space. Launch of mission STS-99 occurred at 12:43:40 p.m. EST from Launch Pad 39A with a crew of five aboard: Commander Kevin Kregel, Pilot Dominic Gorie, and Mission Specialists Janet Kavandi, Janice Voss, Mamoru Mohri of Japan and Gerhard Thiele of Germany. Mohri is with the National Space Development Agency (NASDA) of Japan, and Thiele is with the European Space Agency. 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