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]
Procedencia:[http://en.wikipedia.org/key/Image:Aliakmon_satellite.jpg Curso del Haliacmon [http://terra.nasa.gov/ vista dede satélite]. (Se muestra el cause del río)]