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What are the names of three forms of evidence that support the big bang theory?

Answer:
The main evidence for the Big Bang is the expansion of the Universe, as seen from the Doppler effect. That is, light from other stars or galaxies changes color depending on the relative velocity to Earth; it turns out that all far-away galaxies are receding from us.
First answer by Hilmarz. Last edit by Hilmarz. Contributor trust: 806 [recommend contributor recommended]. Question popularity: 0 [recommend question].