Kepler's Philosophy and the New Astronomy

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Princeton University Press, Oct 29, 2000 - Science - 201 pages
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Johannes Kepler contributed importantly to every field he addressed. He changed the face of astronomy by abandoning principles that had been in place for two millennia, made important discoveries in optics and mathematics, and was an uncommonly good philosopher. Generally, however, Kepler's philosophical ideas have been dismissed as irrelevant and even detrimental to his legacy of scientific accomplishment. Here, Rhonda Martens offers the first extended study of Kepler's philosophical views and shows how those views helped him construct and justify the new astronomy.

Martens notes that since Kepler became a Copernican before any empirical evidence supported Copernicus over the entrenched Ptolemaic system, his initial reasons for preferring Copernicanism were not telescope observations but rather methodological and metaphysical commitments. Further, she shows that Kepler's metaphysics supported the strikingly modern view of astronomical method that led him to discover the three laws of planetary motion and to wed physics and astronomy--a key development in the scientific revolution.

By tracing the evolution of Kepler's thought in his astronomical, metaphysical, and epistemological works, Martens explores the complex interplay between changes in his philosophical views and the status of his astronomical discoveries. She shows how Kepler's philosophy paved the way for the discovery of elliptical orbits and provided a defense of physical astronomy's methodological soundness. In doing so, Martens demonstrates how an empirical discipline was inspired and profoundly shaped by philosophical assumptions.

 

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Contents

Introduction
3
Keplers Life and Times
10
Tables
17
The Mysterium cosmographicum and Keplers Early Approach
39
An Early Modern Treatise on Realism
57
Keplers Archetypes and the Astronomia nova
69
106
78
The Aristotelian Kepler
99
The Mathematical and the Physical
106
Concluding Remarks 6 The Harmonice mundi
112
Physical Astronomy The Nature of Astronomy and Observation
144
The Fate of Keplers Philosophical Thought The Threat to the Perfectibility of Astronomy
169
Bibliography
191
Index
199
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About the author (2000)

Rhonda Martens is Assistant Professor of Philosophy at the University of Manitoba.

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