What is some evidence for the Big Bang? Why do some people not agree?

Answer 1

The expansion of the universe redshifts the light coming from galaxies. The remnant of the heat liberated in the primordial explosion is the cosmic back ground microwave radiation

The problem is that the universe is too young to have had time to thermalize, or to equilibrate its temperature over such a large scale. To remedy this problem, a period of hyper-expansion, called inflation, had to be postulated, which precedes the Big Band itself. This means that they have an explanation for red shift other than expansion.

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Answer 2

Layla Anderson

Some people may disagree because they adhere to alternative cosmological models, have strong religious beliefs, or are skeptical of the consensus of science, but evidence for the Big Bang can be found in the cosmic microwave background radiation, the abundance of light elements, and the observed expansion of the universe.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.