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Athena: Sunspots - K-12 educational site.
Educator's Guide to Sunspots - Classroom activity from the Jet Propulsion Laboratory's Education Gateway.
Exploratorium's Guide to Sunspots - Explore the nature of sunspots and the fascinating history of our efforts to understand them.
Galileo Project: Sunspots - Records of their occurrence from the 1600s.
Inter-Sol Programme (ISP) - International programme with the purpose of observing the daily sunspot activity.
Solar Terrestrial Activity Report - Overview of solar and geomagnetic activity. Graphical comparison of recent solar cycles, sunspots, and solar flux. Generally updated once a day.
Sunspot Index Data Center (SIDC) - Founded in 1981 to continue the work of the Zürich Observatory.
Sunspot Numbers - Introduction to how they were first computed by Rudolph Wolf in 1848, and how they are computed today.
Sunspots and the Solar Cycle - Up-to-date monitoring of the sunspot cycle and Earth's aurora.
Sunspots, Aurora, and Magnetic Disturbances - Looking for the connection between the phenomena.


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Directory > Science > Astronomy > Solar System > Sun > Sunspots