DescriptionMars, as seen by the Hubble Telescope.jpg
English: Hubble Space Telescope view of Mars, showing Polar Ice Cap. The bluish haze of the Martian atmosphere is noticeable, particularly at the edges.
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]