The Oscillating Universe: Einsteinian Cosmology of Black Holes and Gravitational Waves introduces the concept of cyclic cosmology within the framework of General Relativity. This book unravels the mysteries behind the Big Bang, the accelerating expansion of the universe, and the role of gravitational radiation and black holes in shaping our cosmos. With a comprehensive mathematical description of the oscillating universe and variable gravitational mass, readers will grasp the significance of the latest cosmological revolution sparked by the recent discoveries of gravitational waves. Students, professional astronomers and cosmologists will find this book to be a valuable resource, offering a popular presentation of the history of modern cosmology, discussions on recent discoveries in the study of the universe, and an introduction to the cutting-edge cyclic cosmology theory. This book provides a unique opportunity to understand the evolving landscape of cosmology and the implications of cyclic cosmology.

“I love this book! It’s got mysteries, stories about amazing people finding evidence, and brilliant explanations without math. Not only “how did the universe begin, if it did?” But also, since Einstein seems to be right about gravity and curved space-time, well, “what makes it curve?” Could the universe really be bouncing out from a previous collapse? I think Einstein would have the same questions that Gorkavyi poses. Are the new ideas right? We shall see, but not just yet.” --John Mather, Nobel Prize in Physics laureate, Senior Astrophysicist at the NASA Goddard Space Flight Center, USA

“A well written pedagogical account, with also a bunch of thought-provoking insights”. --Prof. Vahe Gurzadyan, Head of the Center for Cosmology and Astrophysics, Armenia

“The book written by renown astrophysicist and distinguished science communicator Dr. Nick Gorkavyi entails the reader on the trip being full of the enchanting mysteries of the Big Bang including black holes, gravitational waves, and dark energy. The book talks lively about the history of cosmology, describes the evolution of its basic concepts, and outlines the fascinating discovery of gravitational waves. The book gives a new glimpse to the future of the Universe which does not end with the Big Crunch but reincarnates into a new Universe through the cyclic transition. The book is written for inquisitive readers who are interested in how the entire Universe works. Supporting mathematical equations are available but postponed to the end of the book in the form of a few appendices. The book is an inspiring and illuminating read for anyone who wants to learn more about the origin, evolution, and ultimate fate of the Universe”. --Prof. Sergei Kopeikin, Department of Physics&Astronomy, University of Missouri-Columbia, USA

• Provides an introduction to the cyclic cosmology theory within the framework of General Relativity and explains the latest version of cyclic cosmology and its implications
• Engages readers with mathematical descriptions of the oscillating universe with variable gravitational mass; but is still accessible to lower-level audiences
• Delivers an exploration of the physical mechanism behind the Big Bang and the accelerating expansion of the universe
• Includes an analysis of the role of gravitational radiation and black holes in shaping the cosmos and examines the concept of positive cosmological constant or dark energy
• Discusses the latest cosmological revolution triggered by the discovery of gravitational waves in 2015