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What evidence is there to support our estimates of the universe's age?

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The age of the universe has been subject to debate for a long time. Before the advent of science, the accepted theory was based in Judeo-Christian theology, which supports Young-Earth Creationism, or the theory that the universe was created in six days by God as stated in the Bible. Later, greater understanding of science began to create new theories on how the universe and the Earth came to exist.

Scientist and Catholic priest Georges Lemaître posited the first fledgling Big Bang Theory, which he called the "Hypothesis of the Primeval Atom." After using the Finite Universe Model in his initial paper, he refined his theory to include an infinitely expanding universe emanating from a single point. This theory allowed for a much greater age of the universe than the religious age of...

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