Michael Zeilik (1946–2022) was a professor of astronomy at the University of New Mexico. His main research interests were the study of H II regions at different wavelengths; the light curves of RS Canum Venaticorum variables; and the ethnoastronomy of the Puebloans. He also wrote astronomy textbooks which were the best-selling in the world for a period. These included:^[1]

• Astronomy: The Evolving Universe
• Conceptual Astronomy
• Introduction to Astronomy & Astrophysics