File:Valhalla Basin from Voyager 1.jpg

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Callisto, composed of rock and ice, is covered with numerous impact craters. The largest of these is Valhalla Basin, a 2748-km (1650-mi) multi-ring impact basin near the top of the image. Craters on Callisto appear as bright and dark spots whose morphology changes. Newer craters appear as sharply defined bright and dark spots. Over time older craters appear as more diffuse splotches.

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Summary

DescriptionValhalla Basin from Voyager 1.jpg	Callisto, composed of rock and ice, is covered with numerous impact craters. The largest of these is Valhalla Basin, a 2748-km (1650-mi) multi-ring impact basin near the top of the image. Craters on Callisto appear as bright and dark spots whose morphology changes. Newer craters appear as sharply defined bright and dark spots. Over time older craters appear as more diffuse splotches.
Date	1979
Source	https://pds.jpl.nasa.gov/planets/images/full/jupiter/callval.jpg
Author	NASA/JPL

Licensing

	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."

File history

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	Date/Time	Dimensions	User	Comment
current	08:00, 16 April 2015	736 × 478 (57 KB)	SteinsplitterBot	Bot: Image rotated by 90°
	07:11, 16 April 2015	478 × 740 (58 KB)	Jcpag2012	crop
	07:09, 16 April 2015	740 × 740 (60 KB)	Jcpag2012	User created page with UploadWizard