Solar Physics: The Sun Spot Cycle

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This NASA website contains extensive information on sun spots and sun spot prediction. Users have access to several forms of graphical and numerical data such as sun spot numbers, the Maunder minimum, the Butterfly diagram, the Greenwich sunspot data and sun spot cycle predictions. The site also includes a wealth of information about the sun and NASA's ongoing sun research.

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Part of the Starting Point collection. The Starting Point collection includes resources addressing the needs of faculty and graduate students designing, developing, and delivering entry-level undergraduate courses in geoscience.