Cosmic Microwave Background Radiation: The Universe’s Baby Picture! Dive into the afterglow of the Big Bang with us! 
The oldest light in the universe, revealing secrets from 13.8 billion years ago. 
Why care? It’s the key to unlocking the cosmos’ earliest mysteries. 
The oldest light in the universe, revealing secrets from 13.8 billion years ago. Why care? It’s the key to unlocking the cosmos’ earliest mysteries.