Figure 27-9: R I V U X G
A “Face” on Mars? (a) This 1976 image from Viking Orbiter 1 shows a Martian surface feature that resembles a human face. Some suggested that this feature might have been made by intelligent beings. (b) This 1998 Mars Global Surveyor (MGS) image, made under different lighting conditions with a far superior camera, reveals the “face” to be just an eroded hill. (c) This MGS image shows features of natural origin within a 215-km (134-mi) wide crater on Mars. Can you see this “face”?
(a: NSSDC/NASA and Dr. Michael H. Carr; b, c: Malin Space Science Systems/NASA)