Thousands of years ago, people first observed a correlation between the heavenly bodies and events on Earth. Out of these early observations and subsequent refinements came what today is known as astrology. For most of these millennia, astrologers used only the seven visible planets: Sun, Moon, Mercury, Venus, Mars, Jupiter and Saturn. It is out of this tradition that Helena Avelar and Luis Ribeiro have written this extensive book on astrology. The rules and principles here presented apply to all branches of astrologyA natal, mundane, horary and elective. Their method is the traditional and time-honored one, and includes, among others, chapters on: The Planets The Zodiac and the Signs The Essential Dignities The Houses The Aspects Chart Dynamics The Condition of the Planets The Fixed Stars The Parts The Power of the Planets Using this traditional method, it is possible not only to thoroughly and completely read the natal chart but to do so with a breadth and depth of meaning not found in the modern methods of astrological interpretation. It avoids cookbook-type methods and centers on the practical understanding of the astrological concepts, presenting the Tradition in present-day language. In addition, more than two hundred fifty illustrations make the traditional principles easy to understand and use in chart interpretation. This practical how-to book is one of a kind, and the one that will teach you the traditional methods and you reach into the past to benefit from the knowledge of the authors and astrologers from ancient Babylonia through the medieval period. It is suitable for both beginners and advanced students, as it provides the indispensable core of astrological knowledge, at the same time allowing more experienced students to organize their knowledge into a coherent system.

After three decades of investigation, and after traveling hundreds of thousands of miles across the globe-from Melbourne to Moscow, Boston to Beijing-Gingerich has written an utterly original book built on his experience and the remarkable insights gleaned from examining some 600 copies of De revolutionibus. He found the books owned and annotated by Galileo, Kepler and many other lesser-known astronomers whom he brings back to life, which illuminate the long, reluctant process of accepting the Sun-centered cosmos and highlight the historic tensions between science and the Catholic Church. He traced the ownership of individual copies through the hands of saints, heretics, scalawags, and bibliomaniacs. He was called as the expert witness in the theft of one copy, witnessed the dramatic auction of another, and proves conclusively that De revolutionibus was as inspirational as it was revolutionary. Part biography of a book, part scientific exploration, part bibliographic detective story, The Book Nobody Read recolors the history of cosmology and offers new appreciation of the enduring power of an extraordinary book and its ideas.

An analysis of the astronomer's pivotal sixteenth-century work traces how his challenge to beliefs about an Earth-centric solar system had a profound influence on the ways in which humanity understands itself and the universe.

De mundo is a protreptic to philosophy in the form of a letter to Alexander the Great and is traditionally ascribed to Aristotle. It offers a unique view of the cosmos, God and their relationship, which was inspired by Aristotle but written by a later author. The author provides an outline of cosmology, geography and meteorology, only to argue that a full understanding of the cosmos cannot be achieved without a proper grasp of God as its ultimate cause. To ensure such a grasp, the author provides a series of twelve carefully chosen interlocking analogies, building a complex picture in the reader's mind. The work develops a distinctly Aristotelian picture of God and the cosmos while paying tribute to pre-Aristotelian philosophers and avoiding open criticism of rival schools of philosophy. De mundo exercised considerable influence in late antiquity and then in the Renaissance and Early Modern times.

On the Revolutions of the Celestial Spheres is an unchanged, high-quality reprint of the original edition of 1473. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.

For centuries, scientists and philosophers believed the universe was a stately; ordered mechanism - mathematical and musical. The smooth operation of the cosmos created a divine harmony (perfect, spiritual, eternal) which composers sought to capture and express. With The Music of the Spheres, readers will see how this scientific philosophy emerged, how it was shattered by changing views of the universe and the rise of Romanticism, and to what extent (if at all) it survives today. From Pythagoras to Newton, Bach to Beethoven, and on into the twentieth century, it is a spellbinding examination of the interwoven fates of science and music throughout history.