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KENNEDY SPACE CENTER, FLA. -- Workers inside the mobile service tower on Launch Pad 17-B at Cape Canaveral Air Force Station help maneuver the upper canister away from the opening. The canister was removed from around the THEMIS spacecraft. THEMIS consists of five identical probes, the largest number of scientific satellites ever launched into orbit aboard a single rocket. The THEMIS mission is to investigate what causes auroras in the Earth's atmosphere to dramatically change from slowly shimmering waves of light to wildly shifting streaks of color. Discovering what causes auroras to change…
