Clark R. Chapman (born May 13, 1945) is a senior scientist and astronomer at the Southwest Research Institute's Boulder, Colorado, Department of Space Studies.
[1] His research generally focuses on astronomy including meteorology and comets.
Chapman has served extensively on the IAU's commission for the study of comets and minor planets, serving as member, vice president and president.
He currently is a member of the division focused on planetary systems and astrobiology.
[4] In addition to 3 books on the inner planets, Chapman often contributes to Sky and Telescope, Astronomy Magazine, The New Scientist and The Planetary Report as well as articles on planetary subjects in The New Encyclopedia Britannica and The Encyclopedia of Science and Technology.