HOAGLAND, Richard C.

Richard Charles Hoagland is an American author and former NASA science advisor who became prominent in the 1980s for promoting claims about artificial structures on Mars. A former consultant to NASA's Goddard Space Flight Center, Hoagland first gained attention for his work on the Viking Mars missions before developing controversial theories about extraterrestrial monuments on the red planet.

Hoagland's primary claim centered on the "Face on Mars," a formation photographed by the Viking 1 orbiter in 1976 in the Cydonia region. He argued this mesa-like structure was an artificial monument created by an ancient Martian civilization, part of a larger complex of geometric structures including what he termed "pyramids." His 1987 book *The Monuments of Mars* popularized these ideas among UFO enthusiasts.

To support his claims, Hoagland developed a pseudoscientific framework he called "hyperdimensional physics," which he claimed could explain both the alleged artificial structures on Mars and various anomalies in the solar system. This theory incorporated elements of sacred geometry and tetrahedral mathematics, suggesting that certain geometric configurations could tap into higher-dimensional energy.

When NASA's Mars Global Surveyor obtained higher-resolution images of the Cydonia region in 1998 and 2001, they revealed the "Face" to be an ordinary eroded mesa with no artificial characteristics. Planetary scientists uniformly rejected Hoagland's interpretations, but he continued promoting his theories through books, radio appearances, and his website Enterprise Mission.