Astronomy: The Science of the Heavenly Bodies

An accessible, chronological survey traces astronomy from its earliest practical observations to early twentieth-century discoveries, blending historical narrative with explanations of methods and instruments. It recounts contributions of ancient observers and key figures such as Ptolemy, Copernicus, Tycho, Kepler, Galileo, and Newton while explaining how measurement and theory evolved. Chapters describe telescopes, reflectors, the spectroscope, astronomical photography, and the rationale for high mountain observatories and large research programs. The second half examines the solar system— the Sun, planets, moons, comets, meteors, and meteorites—and then moves to stellar astronomy, covering spectral classification, distances, variable and binary stars, clusters, nebulae, and galactic structure. The work concludes with discussions of nebular cosmogony, the search for life elsewhere, and changing cosmological ideas.