Image:800px-Sunspot butterfly with graph.gif

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Description	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. Source Source: http://science.msfc.nasa.gov/ssl/pad/solar/images/bfly.gif (updated monthly) en:Category:images whose source is updated monthly en:Category:Solar phenomena
Source	Originally from en.wikipedia; description page is/was here.
Date	2005-03-11 (first version); 2006-11-27 (last version)
Author	Original uploader was SEWilco at en.wikipedia Later versions were uploaded by Whitepaw at en.wikipedia.
Permission (Reusing this image)	PD-LAYOUT; PD-USGOV-NASA.

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Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1]
All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2]
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]

[edit] Original upload log

(All user names refer to en.wikipedia)

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)

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	Date et heure	Dimensions	Utilisateur	Commentaire
actuel	18 août 2007 à 10:49	2 048×1 280 (132 Kio)	Conscious	(full resolution)
	10 août 2007 à 11:35	800×500 (116 Kio)	Mirgolth	({{Information \|Description=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 progres)

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Image:800px-Sunspot butterfly with graph.gif

Un article de Wikipédia, l'encyclopédie libre.

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