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Naveen Kumar G C · Answer 1 · 2023-12-18T09:14:37+0000

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the earliest and most direct observational evidence of the validity of the theory are thee expansion of universe

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Ahamed Rasheed · Answer 2 · 2023-12-20T05:19:36+0000

Answer:Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.

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