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]
TRMM satalitte image of Typhoon Shanshan on September 17, 2006 http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=13883 {{PD-USGov-NASA}}
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