Question

What are Cosmic Background Radiation?​

Answer 1

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The Cosmic Microwave Background, in Big Bang cosmology, is electromagnetic radiation which is a remnant from an early stage of the universe, also known as "relic radiation". The CMB is faint cosmic background radiation filling all space.

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Answer 2

Step-by-step explanation:

The Cosmic Microwave Background, in Big Bang cosmology, is electromagnetic radiation which is a remnant from an early stage of the universe, also known as "relic radiation". The CMB is faint cosmic background radiation filling all space.