Richard Charles Hoagland,[1] (born April 25, 1945 in Morristown, New Jersey[1]) is an American author and a proponent of various conspiracy theories about NASA, lost alien civilizations on the Moon and on Mars and other related topics.

His writings claim that advanced civilizations exist or once existed on the Moon, Mars and on some of the moons of Jupiter and Saturn, and that NASA and the United States government have conspired to keep these facts secret. He has advocated his ideas in two published books, several videotapes,[2][3][4] lectures,[5] interviews,[6][7] and press conferences.[8] His views have never been published in peer-reviewed journals.[9] Hoagland has been described by James Oberg of The Space Review and Phil Plait of Bad Astronomy as a conspiracy theorist and fringe thinker.[10][11]

Contents
[hide] 1 Background 1.1 Hyperdimensional physics
1.2 Mars, Face on Mars, and Cydonia
1.3 Life on Europa
1.4 The Moon
1.5 U.S. government conspiracy
1.6 NASA and the Egyptian Gods
1.7 The Norwegian spiral
1.8 Elenin and YU55
1.9 Other claims

2 Responses by scientists
3 Publications
4 References 4.1 Notes
4.2 Citations

5 External links

http://en.wikipedia.org/wiki/Richard_C._Hoagland