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In three to five sentences, evaluate the scientific evidence that supports the big bang theory and the steady state theory.

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Answer:

The Big Bang Theory is the leading explanation about how the universe began. The scientific evidence of the theory is the expansion of the universe based on Hubble's law (as indicated by the redshifts of galaxies), and the discovery of the cosmic microwave background.

Steady-state theory is a view that the universe is always expanding but maintaining a constant average density, with the matter being continuously created to form new stars and galaxies at the same rate that old ones become unobservable as a consequence of their increasing distance and velocity of recession. However, it is disproved when quasars are discovered in the 60s.

Explanation:

The Big Bang theory is a theory about how the universe was created.

  • According to the Big Bang Theory, the universe was created due to an explosion that occured in space. An extremely high temperature and high density resulted in the expansion of the space. After the universe cooled, the elements were then formed.

  • According to the Big Bang Theory, a gigantic explosion that occured billion sof years ago resulted in the creation of the universe. Matter was pulled together by gravity and this helped in forming the stars and the galaxies that we've in our universe.

 

  • The steady state theory refers to the theory that the universe is expanding but still maintains an average density that's constant.

  • According to the steady state theory, it's stated that even though the universe is expanding, it doesn't change its appearance.

In conclusion, the big bang theory and the steady state theory explain how the universe is created.

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