Masterpiece of historical insight and scientific accuracy and the definitive work on Greek astronomy and the Copernican Revolution. Includes surveys of European and Islamic cosmologies of the Middle Ages and the Renaissance.

'What is the basic building block of the universe?' Thales of Miletus was the first to ask this fundamental, yet to be answered, question in the sixth century B.C. This book offers an in-depth account of the answers he gave and of his adventure into many areas of learning: philosophy, science, mathematics and astronomy. Thales proved that the events of nature were comprehensible to man and could be explained without the intervention of mythological beings. Henceforth they became subject to investigation, experiment, questioning and discussion. Presenting for the first time in the English language a comprehensive study of Thales of Miletus, Patricia O'Grady brings Thales out of pre-Socratic shadows into historical illumination and explores why this historical figure has proved to be of lasting significance.

In antiquity, the expertise of the Babylonians in matters of the heavens was legendary and the roots of both western astronomy and astrology are traceable in cuneiform tablets going back to the second and first millennia BC. The Heavenly Writing, first publsiehd in 2004, discusses the place of Babylonian celestial divination, horoscopy, and astronomy in Mesopotamian intellectual culture. Focusing chiefly on celestial divination and horoscopes, it traces the emergence of personal astrology from the tradition of celestial divination and the use of astronomical methods in horoscopes. It further takes up the historiographical and philosophical issue of the nature of these Mesopotamian 'celestial sciences' by examining elements traditionally of concern to the philosophy of science, without sacrificing the ancient methods, goals, and interests to a modern image of science. This book will be of particular interest to those concerned with the early history of science.

This book is written by a philosopher for other philosophers and for that section of the reading public who buy in large quantities and, no doubt, devour with great earnestness the popular books written by scientists for their enlightenment. We common readers, to adapt a phrase from Samuel Johnson, are fitted neither to criticize physical theories not to decide what precisely are their implications. We are dependent upon the scientists for an exposition of those developments which – so we find them proclaiming – have important and far-reaching consequences for philosophy. Unfortunately, however, our popular expositors do not always serve us very well. The two who are most widely read in this country are Sir Arthur Eddington and Sir James Jeans. They are not always reliable guides. Their influence has been considerable upon the reading public, upon theologians, and upon preachers; they have even misled philosopher who should have known better. Accordingly, it has seemed to me to be worth while to examine in some detail the philosophical views that they have put forth and to criticize the grounds upon which these views are based.

In Planetary Systems from the Ancient Greeks, Theodor S. Kepler seeks to present a bird’s-eye view of the astronomical nature of the work of Newton’s predecessors. Rather than dwelling only on the influence of each thinker’s great ideas, Jacobsen tracks the actual details of their development by investigating the various systems involved and how they were used. As such, this book is an attempt to describe the specific processes through which (pre-Newtonian) astronomers derived a knowledge of the cosmos by observing the heavens and trying out detailed models to account for their observations. Planetary Systems from the Ancient Greeks contributes to scholarship on historical astronomy by offering an approach between that of popular, exact astronomical information and formal, fully referenced scholarly investigation. Each chapter is organized around a key astronomer (Eudoxus, Hipparchus, Ptolemy, Copernicus, Tycho Brahe, and Kepler) and offers relevant biographical introduction, exposition of the astronomical system, and assessment of their contributions. As Jacobsen suggests, the present elementary study of these historical astronomical systems also yields valuable insights for visualizing the salient facts of general astronomy.

Are we more than stardust? Is the appearance of the fragile Earth in the vast universe more than an accident? Are we not children of a Spirit that pervades the dust, rejuvenates life, and embraces the ever-evolving universe? Is there a cosmic Spirit that wants us to awaken to a consciousness of universal meaning, sacred purpose, and mutual friendship with all beings? This book answers these questions with a spirituality of the numinous in our relation to the elements of the Earth in the matrix of the multiverse by taking you on a journey through nine paths and nineteen meditations of awakening. Not bound by any religion, but in deep appreciation of the religious and spiritual heritage of human encounters with the divine depth of existence in our selves and in nature, they invite you to become sojourners by engaging the most profound embodiments of the intangible Spirit by which it facilitates its own materialization in the cosmos and our spiritualization of the cosmos. Use—says this Spirit—the stardust that you are to become a spirit-faring species in an eternal journey of the cosmos to realize its ultimate motive of existence—the attraction of love!