Naming the Universe: An Etymological Dictionary of Physics, Mathematics and Space Sciences is a specialized reference exploring the Greek and Latin roots of scientific terminology used in physics, astronomy, and planetary sciences. It addresses the need for precise etymological understanding to improve clarity and communication in advanced research and education. The book systematically traces the origins of key terms, providing accurate translations, historical context, and visual aids like diagrams and figures of celestial bodies and concepts. Organized into chapters covering general terms, experimental techniques, mathematics, physics, optics, astronomy, and planetary features, it offers a comprehensive resource for researchers, educators, and students alike. By deepening understanding of scientific language's historical foundations, it enhances terminology mastery, supports pedagogical efforts, and fosters interdisciplinary knowledge, making it an invaluable tool for those seeking a richer comprehension of scientific concepts rooted in classical languages.