Microwave Background Radiation

Microwave Background Radiation is the faint glow of energy filling the universe, originating from just after the Big Bang about 13.8 billion years ago. It's like a snapshot of the universe when it was very hot and dense, now stretched and cooled as space expanded. This radiation appears as a uniform microwave glow observable from all directions, providing strong evidence for the universe’s origins and its continuous expansion. Studying it helps scientists understand the early universe’s conditions, composition, and the evolution of cosmic structures like galaxies.