- Preface
- Astronomy a Living Science
- The First Astronomers
- Pyramid, Tomb, and Temple
- Origin of Greek Astronomy
- Measuring the Earth—Eratosthenes
- Ptolemy and His Great Book
- Astronomy of the Middle Ages
- Copernicus and the New Era
- Tycho, the Great Observer
- Kepler, the Great Calculator
- Galileo, the Great Experimenter
- After the Great Masters
- Newton and Motion
- Newton and Gravitation
- After Newton
- Halley and His Comet
- Bradley and Aberration
- The Telescope
- Reflectors—Mirror Telescopes
- The Story of the Spectroscope
- The Story of Astronomical Photography
- Mountain Observatories
- The Program of a Great Observatory
- Our Solar System
- The Sun and Observing It
- Sun Spots and Prominences
- The Inner Planets
- The Moon and Her Surface
- Eclipses of the Moon
- Total Eclipses of the Sun
- The Solar Corona
- The Ruddy Planet
- The Canals of Mars
- Life in Other Worlds
- The Little Planets
- The Giant Planet
- The Ringed Planet
- The Farthest Planets
- The Trans-Neptunian Planet
- Comets—the Hairy Stars
- Where Do Comets Come From?
- Meteors and Shooting Stars
- Meteorites
- The Universe of Stars
- Star Charts and Catalogues
- The Sun's Motion Toward Lyra
- Stars and Their Spectral Type
- Star Distances
- The Nearest Stars
- Actual Dimensions of the Stars
- The Variable Stars
- The Novæ, or New Stars
- The Double Stars
- The Star Clusters
- Moving Clusters
- The Two Star Streams
- The Galaxy or Milky Way
- Star Clouds and Nebulæ
- The Spiral Nebulæ
- Cosmogony
- Cosmogony in Transition
The progress of astronomy from age to age has been far from uniform—rather by leaps and bounds: from the earliest epoch when man's planet earth was the center about which the stupendous cosmos wheeled, for whom it was created, and for whose edification it was maintained—down to the modern age whose discoveries have ascertained that even our stellar universe, the vast region of the solar domain, is but one of the thousands of island universes that tenant the inconceivable immensities of space.
So rapid, indeed, has been the progress of astronomy in very recent years that the present is especially favorable for setting forth its salient features; and this book is an attempt to present the wide range of astronomy in readable fashion, as if a story with a definite plot, from its origin with the shepherds of ancient Chaldea down to present-day ascertainment of the actual scale of the universe, and definite measures of the huge volume of supersolar giants among the stars. (Preface) - Summary by David Todd
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