Marcus Rian was an astronomer with several observatories in Hawaii, Arizona, and Mexico, including the Steward Observatory. His specialty was the mathematical modeling of main sequence stars; his hobby was climbing trees near the observatories and studying the wildlife. He is an author of and contributor to numerous publications (also under 3 pen names). Now retired, he writes editorials, articles, and novels on a wide variety of topics. He is the author of the novels The Thesis, Lucifer Dreaming, and Two Diaries.