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]
Map of Southern California with the location of Diamond Valley Lake identified with red arrow Underlying map is an aerial map obtained from NASA (original: http://visibleearth.nasa.gov/images/6055/SaltonSea.A2003293.2050.250m.jpg) The overlying work (ar
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