Cosmology

Final Theory Of Everything

Thunder and Lightning

The Asteroids; Or Minor Planets Between Mars and Jupiter

The Evolution of Worlds

The Moon: A Full Description and Map of its Principal Physical Features

Meteoric astronomy: A treatise on shooting-stars, fire-balls, and aerolites

Pioneer Saturn Encounter

Einstein and the universe: A popular exposition of the famous theory

The Study of Astronomy

Worlds in the making: The evolution of the universe

The uses of astronomy

Voyage To Eternity

PURPOSE-GUIDED UNIVERSE – eBook

A Short History of Astronomy

Astronomical Curiosities: Facts and Fallacies

Astronomy: The Science of the Heavenly Bodies

Letters on Astronomy in which the Elements of the Science are Familiarly Explained in Connection with Biographical Sketches of the Most Eminent Astronomers

The Story of the Heavens

The Ways of the Planets

Peirce's Cosmology