This book is meticulously structured to guide readers through a comprehensive journey, from the technical prowess of the JWST itself to the profound cosmological insights it offers. The opening chapter lays the foundation, detailing the JWST's design, capabilities, and the pivotal role it plays in contemporary astronomy. Following this, the narrative expands to encapsulate the entire history of the universe, setting the stage for the deeper explorations that ensue. Subsequent chapters delve into the core concepts and theories that form the backbone of modern cosmology. The Conventional Big Bang Theory, a cornerstone of our understanding of the universe's inception, is reexamined in light of data from the JWST. The reevaluation of the Hubble Constant and the assessment of cosmic density are pivotal in refining our grasp of the universe's expansion and composition. Advanced topics such as the Quantum Anomalies (Qa) Estimates, X-ray Cosmic Radiation, and thermodynamics in the early universe are presented, each underpinned by the latest findings from the JWST. A thorough analysis of stellar nucleosynthesis, focusing on the proton-neutron ratio, and the distribution of cosmic elements, provides vital clues about the processes that shaped the early universe. The latter part of the book addresses the theoretical frameworks and models that seek to explain the cosmos at its most fundamental level. It critically examines the Standard Model of particle physics and the Friedman-Lema?tre Cosmological Model in light of JWST observations. This sets the stage for an exploration of advanced concepts like Gauge Theories, Unified Theories Frameworks, and the intriguing realms of Grand Unified Theories, particularly focusing on proton decay within the SU(5) theory.