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.
2007-12-11 19:25 Soladee 800×600×??? (39296 bytes) - This is the work of NASA. - Depicts NASA's Helios aircraft flying at 10,000 feet in skies northwest of Kauai, Hawaii in August 2001. Source: http://apod.nasa.gov/apod/image/0707/helios_cthomas_big.jpg
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