An Introduction to Modern Cosmology Third Edition is an accessible account of modern cosmological ideas, providing a clear and comprehensive introduction to the subject. The book delves into Big Bang Cosmology, exploring its observational successes in explaining the expansion of the universe, the existence and properties of the cosmic microwave background, and the origin of light elements in the universe. It also covers the properties of the very early Universe, including the motivation for a rapid period of expansion known as cosmological inflation.

The third edition brings this established undergraduate textbook up-to-date with the rapidly evolving observational situation. The fully revised edition takes an approach grounded in physics, with a logical flow of chapters that lead the reader from basic ideas of the expansion described by the Friedman equations to more advanced ideas about the early universe. It incorporates up-to-date results from the Planck mission, which imaged the anisotropies of the Cosmic Microwave Background radiation over the whole sky.

The book also includes Advanced Topic sections that present subjects with more detailed mathematical approaches, providing greater depth to discussions. Student problems with hints for solving them and numerical answers are embedded in the chapters to facilitate understanding and learning. This edition ensures that students and readers gain a thorough understanding of modern cosmology, making it an ideal resource for both undergraduate courses and self-study.

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