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KENNEDY SPACE CENTER, Fla. -- Space Shuttle Endeavour is bathed in light as it waits on Launch Pad 39A. At the top of the external tank can be seen the “beanie cap,” a venting apparatus at the end of the Gaseous Oxygen Vent Arm. Stretching past the solid rocket booster to the orbiter is the Orbiter Access Arm with the White Room at the end. The White Room provides a controlled environment for entry into the orbiter. Endeavour is expected to lift off on mission STS-100 on April 19, carrying the Multi-Purpose Logistics Module Raffaello and the Canadian robotic arm, SSRMS, with a crew of seven to the International Space Station