1. Explain the evidence which suggests that the universe is expanding. 2. What is the Big Bang Theory and what does it propose? 3. In addition to evidence, which suggests that the universe is expanding, what other evidence supports the Big Bang Theory?

1) The evidence that the universe is expanding can be explained by the observed redshifted light from distant galaxies which according to the evaluation means that the galaxies are in recession. The observation was explained by Hubble's law which stated that the rate of recession of the galaxies from the Earth is proportional to their away distance

2) The Big Bang Theory is a theory that scientists used to explain the origin of the universe. According to the big bang theory states that the universe started from an extremely high temperature and high density singular state that exploded and expanded over time to the the present day universe

3) Another evidence that supports the Big Bang Theory is the cosmic background radiation which is has its origin from the Big Bang

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