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]
{{Information
|Description={{en|1=Apollo Extension Systems Lunar Base concept}}
{{es|1=Concepto de base lunar del programa Apollo Extension Systems}}
{{gl|1=Concepto de base lunar do programa Apollo Extension Systems}}
|Source=http://astronautix.com/craft
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