Question

What is Cosmic Microwave Background Radiation (CMBR)?❤​

Answer 1

Answer:

The cosmic microwave background (CMB, CMBR), in Big Bang cosmology, is electromagnetic radiation as a remnant from an early stage of the universe, also known as "relic radiation".

Hope it will help you

Please mark me the braniest

Answer 2

$\huge\mathfrak\red{Answer!!!}$

The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion. (The universe is still expanding today, and the expansion rate appears different depending on where you look). The CMB represents the heat left over from the Big Bang.