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KENNEDY SPACE CENTER, FLA. - In the clean room at Astrotech Space Operations near Kennedy Space Center, the Deep Impact spacecraft is lifted off its movable stand. It will be moved to another stand. The spacecraft will undergo functional testing to verify its state of health after the over-the-road journey from Ball Aerospace and Technologies Corp. in Boulder, Colo. This will be followed by loading updated flight software and beginning a series of Mission Readiness Tests. Deep Impact, a NASA Discovery mission, will probe beneath the surface of Comet Tempel 1 and reveal the secrets of its interior. After releasing a 3- by 3-foot projectile to crash onto the surface, Deep Impact’s flyby spacecraft will collect pictures and data of how the crater forms, measuring the crater’s depth and diameter, as well as the composition of the interior of the crater and any material thrown out, and determining the changes in natural outgassing produced by the impact. It will send the data back to Earth through the antennas of the Deep Space Network. The spacecraft is scheduled to launch Dec. 30, 2004, aboard a Boeing Delta II rocket from Launch Complex 17 at Cape Canaveral Air Force Station, Fla.