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File:Ssn yearly.jpg

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400 year sunspot history, measured with Wolfer numbers.

Source: http://science.nasa.gov/ssl/pad/solar/images/ssn_yearly.jpg


Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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This graph image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.


It is recommended to name the SVG file “Ssn yearly.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
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The original description page was here. All following user names refer to en.wikipedia.
  • 2005-02-04 20:27 Bhamer 906×286× (27604 bytes) {{PD-USGov-NASA}}

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Date/TimeThumbnailDimensionsUserComment
current02:16, 28 September 2012Thumbnail for version as of 02:16, 28 September 2012906 × 286 (27 KB)OgreBot (talk | contribs)(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2005-02-04 20:27:29 by Bhamer
07:52, 16 May 2005Thumbnail for version as of 07:52, 16 May 2005800 × 253 (27 KB)Xgarciaf~commonswiki (talk | contribs)400 year sunspot history, measured with Wolfer numbers. * 1790 to 1820: Dalton Minimum * 1645 to 1715: Maunder Minimum ---- Source: http://science.nasa.gov/ssl/pad/solar/images/ssn_yearly.jpg {{PD-USGov-NASA}}

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