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Summary
DescriptionViking spacecraft.jpg
English: Viking 1 launched aboard a Titan IIIE rocket August 20, 1975 and arrived at Mars on June 19, 1976. The first month was spent in orbit around the martian planet and on July 20, 1976 Viking Lander 1 separated from the Orbiter and touched down at Chryse Planitia.
This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Viking 1. You can see its nomination here.
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. [6]