An Introduction to Astronomy is a book written by Forest Ray Moulton and was first published in 1916. This book provides a comprehensive introduction to the field of astronomy, covering a range of topics such as the solar system, stars, galaxies, and cosmology. It is aimed at both students and amateur astronomers who are interested in learning about the universe and the science behind it.The book begins with an overview of the history of astronomy, including the contributions of ancient civilizations such as the Greeks and Egyptians. It then moves on to discuss the basics of astronomy, such as the properties of light, telescopes, and the celestial sphere. The solar system is covered in detail, including the planets, their moons, and the asteroid belt.The book also explores the study of stars, including their formation, evolution, and classification. It discusses the different types of stars, such as red giants, white dwarfs, and neutron stars. The book also covers the study of galaxies, including their formation and classification.Finally, the book delves into the study of cosmology, including the Big Bang theory and the expanding universe. It discusses the cosmic microwave background radiation and the search for dark matter and dark energy.Overall, An Introduction to Astronomy is a comprehensive guide to the study of the universe, providing a wealth of information and insights into the science of astronomy. It is a valuable resource for anyone interested in exploring the wonders of the cosmos.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.