English: An Aurora Borealis as seen in South Dakota due to June 16th, 2012 Solar flare. Auroras were in fact seen as far south as Ocean City, Maryland.
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]