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Date: 2011-11-30 18:23:10Spacecraft propulsion Ceres Dawn Discovery program Unmanned spacecraft Vesta Ion thruster Ernst Stuhlinger Spaceflight Spacecraft Space technology | Ion Propulsion Story Mapping History FrameAdd to Reading ListSource URL: dawn.jpl.nasa.govDownload Document from Source WebsiteFile Size: 95,45 KBShare Document on Facebook |