Kuva:Sun in X-Ray.png
Wikipedia
Sun_in_X-Ray.png (690×500 px, 338 KiB, MIME-tyyppi: image/png)
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| Description |
This image shows the Sun as viewed by the Soft X-Ray Telescope (SXT) onboard the orbiting Yohkoh satellite. The bright, loop-like structures are hot (millions of degrees) plasma (electrically charged gas) confined by magnetic fields rooted in the solar interior. An image of the sun in visible light would show sunspots at the feet of many of these loops. The halo of gas extending well beyond the sun is called the corona. The darker regions at the North and South poles of the Sun are coronal holes, where the magnetic field lines are open to space and allow particles to escape. |
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| Source |
NASA Goddard Laboratory for Atmospheres |
| Date |
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| Author |
NASA Goddard Laboratory for Atmospheres |
| Permission |
Copyright information from http://rsd.gsfc.nasa.gov/rsd/About.html - Images produced by NASA are usually free of copyright [...] |
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This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).
Warnings:
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[edit] Further source information
- From: http://www.lmsal.com/SXT/html2/extended_corona_8_may_92_enhanced_red.html
- Data policy: http://www.lmsal.com/SXT/index.html and follow link to http://solar.physics.montana.edu/sxt_obsrpt/new_data_policy.txt
Whether or not this is ok for WP I leave to you to judge. --Rivi 22:26, 13 October 2006 (UTC)
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