Question

Explain why cosmic background radiation was an important discovery.

Answer 1

Cosmic background radiation was an important discovery because it helps us learn how the early universe was formed, the radiation left over from the birth of the universe, provided the strongest possible evidence that the universe expanded from an initial violent explosion, known as The Big Bang.

Step-by-step explanation:

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Answer 2

Cosmic background radiation is the weak radiation leftover and still spreading from the Big Bang. It helped us see how the universe was in moments after it was born.