English: Maria Zuber, GRAIL Principal Investigator, from the Massachusetts Institute of Technology in Cambridge, describes how NASA's solar-powered Gravity Recovery And Interior Laboratory (GRAIL) Ebb and Flow spacecraft work to students and parents during the GRAIL MoonKAM student expo, Friday, June 1, 2012, in Washington.
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]