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Leonard Nimoy narrates this a video about NASA's Dawn mission to the asteroids Vesta and Ceres. Learners will follow the mission from paper to launch pad to asteroid belt and beyond. The video features the planning, instrumentation and technological challenges of this unique mission. Note: This video was produced pre-launch in 2007. For the latest news and science go to the Mission website under Related & Supplemental Resources (right side of this page).