Describe the cosmic microwave background radiat... - SS2 Physics Space Physics and Astrophysics Question

The cosmic microwave background radiation (CMB) is a faint, uniform radiation that permeates the entire universe. It was first discovered in 1965 by Arno Penzias and Robert Wilson. The CMB is often referred to as the afterglow of the Big Bang because it represents the residual heat from the early stages of the universe.

The CMB's distribution of temperature fluctuations provides valuable insights into the structure and composition of the universe. Tiny variations in temperature across the CMB represent density fluctuations in the early universe that eventually led to the formation of galaxies and galaxy clusters.

Overall, the discovery and study of the CMB have significantly contributed to our understanding of the origin, evolution, and structure of the universe, providing strong support for the Big Bang Theory.