Solar activity

solar activity[edit | edit source]

Any type of variation in the appearance or energy output of the sun; usually associated with the variation of sunspots and other features over the 11-year solar cycle.

The number and magnitude of these features vary with time, from minimum values to maximum values, that is, from solar minimum to solar maximum.
See faculae, flare, granules, plage, prominence, spicules, sunspot.

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