Astronomy by David P. Todd is a comprehensive and accessible introduction to the science of the stars, planets, and the universe beyond our world. First published in the early 20th century, this classic work guides readers through the fundamental principles and discoveries of astronomy, blending scientific rigor with clear, engaging prose. The book covers a wide range of topics, including the history of astronomy, the structure and motion of the solar system, the nature of the sun, moon, and planets, and the mysteries of comets, meteors, and the distant stars. Todd explains the methods astronomers use to observe and measure celestial phenomena, from telescopes and photographic techniques to the mathematics of orbits and distances. Richly illustrated with diagrams and star charts, Astronomy also explores the broader questions of the universe's origin, the possibility of life on other worlds, and humanity's place in the cosmos. Designed for students, amateur astronomers, and curious readers alike, this book remains a valuable resource for anyone seeking to understand the wonders of the night sky and the science that reveals its secrets.