Astronomy Explained Upon Sir Isaac Newton's Principles And made easy to those who have not studied mathematics

A gentle introduction to the heavens, this treatise builds on Sir Isaac Newton’s laws to make astronomy approachable for readers without a mathematical background. Written in the late 1700s, it blends clear explanations with vivid illustrations, including a detailed description of a brass orrery that lets listeners picture the Sun, planets, and Moon in motion. The author treats the night sky as a practical science, emphasizing how understanding celestial patterns has long guided navigation, timekeeping, and our sense of place on Earth.

The work moves through the solar system, the Copernican revolution, and the refutation of older models, before tackling phenomena such as planetary phases, the nature of light, and the causes of tides. Chapters also guide listeners through methods for measuring distances, predicting eclipses, and interpreting the calendar of moons and stars. Tables of lunar phases and historical eclipses provide concrete data, turning lofty concepts into tools anyone can grasp.