A view of the Aug. 21, 2017, total solar eclipse from Madras, Oregon. Sunsketcher, a new NASA-backed project with an iOS and Android app, wants your photographs of the “Great American Eclipse.” (Incidentally, so do we.)Recent Videos Scientists behind the project want to gather more information about the sun’s interior and aid their work in accurately measuring the shape of the sun and testing theories of gravity, including general relativity.
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