In a clean room at Astrotech, workers stand near while the Dawn spacecraft is lifted and moved toward a work stand for solar panel installation. 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/Jack Pfaller