William Sheehan retired from psychiatry in 2018 after a professional career spanning three decades. He is a leading historian of astronomy, with twenty books to his name.
Jim Bell is a professor of astronomy and planetary science in the School of Earth and Space Exploration at Arizona State University. His research focuses on the geology and composition of planets, moons, asteroids, and comets, and he has authored seven popular science books.
Christopher Douyard took the backroads to audiobook narration, though he is no stranger to performing. Christopher has nourished a passion for books and storytelling since his youth, when he would devour Tolkien and the Encyclopedia Britannica with equal abandon. He records from his studio in central Connecticut.