English: Apollo 16's Lunar Surface Magnetometer. This photo is used in Figure 11-6 of the Apollo 16 Preliminary Science Report (NASA SP-315), which has the following caption: The Apollo 16 LSM deployed on the Moon in the lunar highlands. Sensors are at the top ends of the booms and approximately 75 cm above the lunar surface.
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]