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]
Satellite image of the Korean peninsula at night. Earth at Night: Flat Maps, NASA Earth Observatory, taken by the VIIRS instrument on the Suomi-NPP satellite
Image satellite de la péninsule coréenne de nuit. Earth at Night: Flat Maps, NASA Earth Observatory, prise par l'instrument VIIRS du satellite Suomi-NPP