The Face of Cydonia
Jack Kirby, co-creater of the Fantastic Four and other Marvel Super-Heroes, penciled a comic about a Face on Mars in the 1950's.
There are some who are convinced that there truly is a Face on Mars, as well as other artificial structures.
Richard C. Hoagland, regular guest on Coast to Coast a.m. with George Noory, believes there is a conspiracy to keep the truth from Earth's public and NASA has been doctoring and with-holding evidence of life on Mars. Tom Van Flandern has a thesis that Mars was a moon of a planet that exploded. The inhabitants of Mars left before the explosion and became refugees on Earth. Mankind is from Mars?