File:Sunspots_on_sun.jpg
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Sunspots_on_sun.jpg (256 × 257 pixels, file size: 7 KB, MIME type: image/jpeg)
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Summary
DescriptionSunspots on sun.jpg |
English: Image of the sun's solar disk, showing sunpsots on the surface. |
Source | Own work by the original uploader |
Author |
This file is lacking author information.
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Source (Wikipedia): Image:Sunspot with Earth Comparison.jpg (excerpt extracted for just solar-disk image).
Variations:
- with closeup of upper sunspots: Image:Sunspot with Earth Comparison.jpg.
Explanation
The top group of sunspots is active region 9393, as seen by the MDI instrument on SOHO, which was the largest sunspot group observed so far during the current solar cycle. On 30 March 2001, the sunspot area within the group spanned an area more than 13 times the entire surface of the Earth. It was the source of numerous flares and coronal mass ejections, including one of the largest flares recorded in 25 years on 2 April 2001. Caused by intense magnetic fields emerging from the interior, a sunspot appears to be dark only when contrasted against the rest of the solar surface, because it is slightly cooler than the unmarked regions. The image was created by NASA, an agency of the US Federal Government.
Licensing
Public domainPublic domainfalsefalse |
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.) | ||
Warnings:
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Original upload log
Transferred from en.wikipedia to Commons using For the Common Good.
Date/Time | Dimensions | User | Comment |
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05:51, 14 March 2007 | 262 × 262 (10,470 bytes) | w:en:Wikid77 (talk | contribs) | Image of the [[sun]]'s solar disk, showing sunpsots on the surface. Source ([[Wikipedia]]): [[Image:Sunspot with Earth Comparison.jpg]] (excerpt extracted for just solar-disk image). Variations: :* with closeup of upper sunspots: [[Image:Sunspot with Ea |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:05, 2 May 2015 | 256 × 257 (7 KB) | Jcpag2012 | remove white borders | |
07:47, 14 February 2015 | 262 × 262 (10 KB) | Jcpag2012 | Transferred from en.wikipedia: see original upload log above |
File usage
Global file usage
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