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2 votes
What phenomenon is considered to be evidence of the universe "cooling off" after the great explosion of the

Big Bang?
black holes
O cosmic background radiation
O gamma rays
O X-rays

User Shiluka
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2 Answers

5 votes

Answer:

black holes

Step-by-step explanation:

User Hugo Wood
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5 votes

Answer:

If I’m correct it’s O cosmic background radiation

Step-by-step explanation:

User Marzouk
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