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]
The original description page was here. All following user names refer to en.wikipedia.
2005-12-27 18:51:59 E. Brown 440×425 (61980 bytes) A NASA satellite image of Hurricane Esther in 1961. This makes it one of the first satellite images taken of a hurricane.