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Summary
DescriptionMartian face viking cropped.jpg
English: The “Face on Mars” was one of the most striking and remarkable images taken during the Viking missions to the red planet (the black specks represent data errors). Unmistakeably resembling a human face, the image caused many to hypothesize that it was the work of an extraterrestrial civilization. Later images revealed that it was a mundane feature rendered face-like by the angle of the Sun.
Deutsch: Ausschnitt aus der „Marsgesicht“-Aufnahme der NASA-Sonde Viking I vom 25. Juli 1976, die eine Formation der Cydonia-Region in der nördlichen Hemisphäre des Planeten Mars zeigt.
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]