The Physics of the Cosmic Microwave Background

Abstract

The Cosmic Microwave Background (CMB) radiation is a cornerstone of modern cosmology, offering a unique window into the early universe's conditions and evolution. This paper provides a comprehensive overview of the physics behind the CMB, including its discovery, properties, and implications for our understanding of the cosmos. We explore the origins of the CMB, its temperature fluctuations, and its role in cosmological theories. Through a blend of observational evidence and theoretical frameworks, we unravel the mysteries hidden within this faint afterglow of the Big Bang.