English: A colorized topographic map of the martian impact basin Hellas, together with its surroundings, from the Mars Orbiter Laser Altimeter (MOLA) instrument of the Mars Global Surveyor spacecraft. Hellas, the deepest basin on Mars, lies in the southern hemisphere, south of Syrtis Major Planum.
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]