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earth
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How was the Earth formed? There have been many different theories and ideas of how the Earth came to be. One is the Big Bang Theory. This theory states that the universe started with a giant explosion, the Big Bang. This explosion was extremely hot and when it cooled enough atoms were created to form mass. For years the scientific world has wrestled with this question. Because of the extensive tests, and logical theories, I believe the Big Bang Theory to be the answer to the question. Many tests have been done throughout time to prove this intangible theory, the Big Bang. Albert Einstein’s equations said that the universe must be expanding or contracting. This all came together when isotropy and homogeneity came into the picture. Homogeneity is evidence that from place to place the average density of matter does not vary. Isotropy says that the direction in space one looks does not change what they see. According to Einstein’s equations the distribution of matter in the universe will remain homogeneous. Concluding that space itself expands or contracts. The distribution between two points would be increasing the faster they would move apart. That would only be if it were expanding (Compton’s Encyclopedia 1). I think that Einstein’s equations were great evidence toward the Big Bang but much more was to come. Scientists believed that as the earth cooled it expanded. Protons began to form after about one second. The isotope of hydrogen was formed in what they call the “first three minutes.” Hydrogen atoms only absorb and emit certain wavelengths.
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