File:Van Allen.jpg

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DescriptionVan Allen.jpg	Van Allen radiation belts. The first American spacecraft, Explorer 1 (shown here), discovered a belt of energetic particles trapped in thefield and streaming back and forth above the Earth. It was the first of two such zones, the Van Allen belts, to be found.
Source	First uploaded to en.wikipedia.org (log) and commons.wikimedia.org (log). Retrieved from http://image.gsfc.nasa.gov/poetry/tour/teachers2.html, Picture 4.
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	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: Use of NASA logos, insignia and emblems is restricted per U.S. 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 based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its 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] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:51, 15 December 2019		457 × 301 (35 KB)	Geek3 (talk \| contribs)	dipole fieldlines are not circles
	17:17, 16 May 2008		457 × 301 (33 KB)	Misterio3264 (talk \| contribs)	{{Information \|Description= \|Source=self-made \|Date= \|Author= Misterio3264 \|Permission= \|other_versions= }}

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