Question

is big bang theory exist or it's just hypothesis I think anyone cannot answer​

Answer 1

So dude, here's the evidence of Big Bang Theory.....

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In 1964, the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model, since that theory predicted the existence of background radiation throughout the universe before it was discovered.

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Don't refuse to mark my answer as brainliest if it helped you....