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. [3]
(A satellite image of [[Moscow]] by [[NASA]]. image description [http://eol.jsc.nasa.gov/sseop/EFS/photoinfo.pl?PHOTO=ISS004-E-10414 here] {{PD-USGov-NASA}} )
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