This book offers a comprehensive and reflective exploration of cosmology, presenting the study of the universe as both a scientific discipline and an intellectual journey that has evolved over centuries. It introduces readers to the fundamental questions that have long driven human curiosity: the origin of the universe, its large-scale structure, the laws governing its evolution, and its ultimate fate. Rather than treating cosmology as a collection of isolated facts, the book weaves together physical theory, astronomical observation, and philosophical insight to show how our understanding of the cosmos has been constructed and refined. The narrative emphasizes how ideas about space, time, matter, and energy are deeply interconnected, forming a coherent framework that explains the observable universe while also pointing toward unresolved mysteries. The book traces the development of modern cosmology from its conceptual foundations to its present status as a precision science. It highlights the role of key theoretical advances, particularly those emerging from the theory of relativity developed by Albert Einstein, which reshaped ideas about gravity and space-time and made it possible to model the universe as a dynamic, evolving system. Alongside theory, the book underscores the importance of observation, showing how advances in telescopes, detectors, and data analysis have transformed distant galaxies, cosmic radiation, and subtle distortions of light into powerful tools for testing cosmological models. In doing so, it demonstrates how cosmology stands at the intersection of mathematics, physics, and astronomy, relying on the constant dialogue between prediction and evidence. Throughout the book, complex concepts are presented with clarity and continuity, making them accessible without sacrificing scientific depth. The discussion moves smoothly from the large-scale homogeneity of the universe to the formation of cosmic structures such as galaxies and clusters, and from the early, hot phases of cosmic history to the present era of accelerated expansion.
Kieran Pealmer is a distinguished scholar and communicator in the field of cosmology, known for his ability to bridge advanced theoretical ideas with clear, engaging exposition. His work reflects a deep engagement with the fundamental questions that define modern cosmology, including the origin and evolution of the universe, the nature of space and time, and the physical laws that govern cosmic structure on the largest scales. Drawing upon a strong foundation in mathematical physics and astrophysical theory, Pealmer approaches cosmology not merely as a technical discipline, but as an evolving framework through which humanity seeks to understand its place in the universe. As an expert in cosmology, Pealmer is particularly recognized for integrating theory with observation. His perspective emphasizes how models of the universe gain meaning only when confronted with empirical evidence, whether from galaxy surveys, measurements of cosmic background radiation, or studies of large-scale structure. This balanced approach allows him to present complex ideas with intellectual rigor while remaining attentive to the uncertainties and open problems that continue to shape the field. His writing reflects an awareness that cosmology is both a mature science with well-tested foundations and a frontier discipline driven by unanswered questions.
| Preface Chapter 1. Foundations of Cosmology Scope and Aims of Cosmology Historical Development of Cosmological Ideas Observational Pillars of Modern Cosmology Cosmological Principle and Large-Scale Homogeneity Distance, Time, and Scale in the Universe Units, Constants, and Natural Scales Role of Theory and Observation Current Challenges in Cosmology Chapter 2. Observational Tools and Methods Telescopes and Astronomical Surveys Electromagnetic Spectrum in Cosmology Redshift and Cosmic Distance Indicators Standard Candles and Standard Rulers Galaxy Catalogs and Sky Mapping Cosmic Background Radiation Measurements Data Analysis and Statistical Techniques Limitations and Uncertainties in Observations Chapter 3. The Expanding Universe Discovery of Cosmic Expansion Hubble’s Law and the Hubble Constant Redshift–Distance Relation Kinematics of Expanding Space Scale Factor and Cosmic Time Observational Evidence for Expansion Local Deviations from the Hubble Flow Implications of Universal Expansion Chapter 4. Relativistic Cosmology and Field Equations Space–Time Geometry and Curvature General Relativity in a Cosmological Context Friedmann–Lemaître–Robertson–Walker Metric Friedmann Equations and Their Solutions Energy Density and Pressure Components Cosmological Constant Curvature and Cosmic Geometry Limits of Relativistic Cosmological Model |
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$280.00