Astronomy Explained Upon Sir Isaac Newton's Principles and Made Easy to Those Who Have Not Studied Mathematics is a comprehensive and accessible guide to the wonders of the universe, written by James Ferguson and first published in the 18th century. This classic work aims to demystify the complex principles of astronomy by presenting them in a clear and straightforward manner, specifically designed for readers without a background in mathematics. Drawing upon the revolutionary theories of Sir Isaac Newton, Ferguson explains the fundamental laws governing celestial bodies, including gravity, planetary motion, eclipses, tides, and the phases of the moon. The book is structured as a series of engaging dialogues and practical examples, making intricate scientific concepts approachable for the general public. Ferguson employs simple language, detailed illustrations, and everyday analogies to illuminate topics such as the structure of the solar system, the nature of comets, the measurement of time, and the use of astronomical instruments. He also addresses common misconceptions and provides historical context, tracing the development of astronomical thought from ancient times to the era of Newton. Throughout the text, Ferguson emphasizes observation and experimentation, encouraging readers to explore the night sky for themselves. The book includes instructions for constructing basic astronomical devices and offers guidance on how to make accurate observations without advanced equipment. By blending scientific rigor with clarity and enthusiasm, Astronomy Explained Upon Sir Isaac Newton's Principles remains a valuable resource for anyone interested in understanding the universe, regardless of their mathematical background. This enduring work not only celebrates the achievements of Newton but also inspires curiosity and wonder about the cosmos in readers of all ages.