Dawn by NASA (source code)

= Dawn by NASA
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https://science.nasa.gov/mission/dawn/

Mission description and launch date. Instrument-team description: https://science.nasa.gov/mission/dawn/technology/science-payload/ . Ion propulsion: https://science.nasa.gov/mission/dawn/technology/ion-propulsion/ . Relevant locators: Vesta and Ceres targets; framing camera, visible/infrared spectrometer, gamma ray and neutron detector; gravity inferred by radio tracking.