Image:Sunspot butterfly with graph.gif

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Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers.

Spörer's law noted that at the start of an 11-year sunspot cycle, the spots appeared first at higher latitudes and later in progressively lower latitudes.

The Babcock Model explains the behavior described by Spörer's law, as well as other effects, as being due to magnetic fields which are twisted by the Sun's rotation.

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Source: http://science.msfc.nasa.gov/ssl/pad/solar/images/bfly.gif (updated monthly)

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(del) (cur) 13:22, 27 November 2006 . . Whitepaw (Talk | contribs) . . 2048×1280 (135,495 bytes) ({{pd-nasa}} Updated image with latest version (updates monthly))
(del) (rev) 17:53, 11 March 2005 . . SEWilco (Talk | contribs) . . 2048×1280 (135,177 bytes) (Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers. {{PD-USGov-NASA}} Source: http://science.msfc.nasa.gov/ssl/pad/solar/images/bfly.gif (updated monthly))