Sunspot_butterfly_graph.gif

Summary

Description Sunspot butterfly graph.gif	English: Butterfly diagram showing paired pattern of sunspots. Graph shows sunspot numbers. en: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 en: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.
Date	April 2011
Source	http://solarscience.msfc.nasa.gov/images/bfly.gif (updated monthly) http://solarscience.msfc.nasa.gov/SunspotCycle.shtml (explanatory text)
Author	NASA, Marshal Space Flight Center, Solar Physics

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2006-11-27 13:22 Whitepaw 2048×1280×8 (135495 bytes) {{pd-nasa}} Updated image with latest version (updates monthly)
2005-03-11 17:53 SEWilco 2048×1280×8 (135177 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)