CMB Anisotropy

CMB (Cosmic Microwave Background) anisotropy refers to tiny fluctuations in the temperature of the universe's earliest light, known as the cosmic microwave background. These small variations reveal where matter was slightly denser or less dense in the early universe, helping scientists understand how galaxies and large cosmic structures formed. Think of it as a faint, ancient fingerprint from when the universe was just a few hundred thousand years old, providing clues about its composition, evolution, and the fundamental physics shaping everything we see today.