Hi! Guys welcome to another episode of "Physics Freak!" . In this episode I spoke about the cosmic microwave back ground , which plays a vital role to find the past of this universe and established a strong evidence of the bigbang cosmology . In this episode I told you about 1) what is CMB ? 2) history of CMB ? 3) how to detect CMB ? 4) various experiments to map this CMB and find its nature and 5) relationship between CMB & bigbang cosmology . Hope you will enjoy this podcast and follow this podcast and follow me on instagram . Instagram : https://www.instagram.com/think_like_a_physicist/