Richard C. Hoagland (born 1945), fringe researcher, famous for his theories on the Face on Mars
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In 1998 Plait established Badastronomy.com with the goal of clearing up what he perceived to be widespread public misconceptions about astronomy and space science in movies, the news, print, and on the Internet, also providing critical analysis of several pseudoscientific theories related to space and astronomy, such as Planet X, Richard Hoagland's theories, and the moon landing "hoax".