English: This colorful view of Mercury was produced by using images from the color base map imaging campaign during MESSENGER's primary mission. These colors are not what Mercury would look like to the human eye, but rather the colors enhance the chemical, mineralogical, and physical differences between the rocks that make up Mercury's surface.
Attribution: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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This image, originally posted to Flickr, was reviewed on 4 February 2014 by the administrator or reviewerMZaplotnik, who confirmed that it was available on Flickr under the stated license on that date.
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.
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]