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KENNEDY SPACE CENTER, FLA. -- At Astrotech, the more than 32-foot-long solar panels on one side of the Dawn spacecraft are fully deployed during a test. Dawn's mission is to explore two of the asteroid belt's most intriguing and dissimilar occupants: asteroid Vesta and the dwarf planet Ceres. Dawn is scheduled to launch June 30 aboard a Delta II rocket from Launch Complex 17-B at Cape Canaveral Air Force Station. Photo credit: NASA/George Shelton