Sci-224 Astronomy with Lab Course Project

1979 words 8 pages
| The Big Bang | The Origin and Evolution of the Universe | | [Type the author name] | 4/11/2013 |
Astronomy with Lab
DeVry University

This paper looks at the Big Bang Theory. It examines the history of the theory and the scientific ideas on which it is based. It also examines some of the evidence proving the Big Bang and addresses some of the more common arguments against it. |

Contents The Search for Creation 3 The Big Bang Theory 3 Supporting Observations 4 Objections 5 Conclusion 5 References 7

The Search for Creation Man seems, by nature, to be a curious creature. We are always looking for explanations for natural phenomena. We have attributed the sound of thunder and lightning in the sky to Thor.
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Hubble noticed that, on average, all of the other galaxies were moving away from us and the further away they were the faster the galaxies were moving. If every galaxy were moving away from the Milky Way then that might indicate that our galaxy is at the center of the universe but that assumption would be incorrect. If a person could travel the great distances to another galaxy they would make the same observation from there; that every other galaxy, on average, is moving away from them as well. How does that work? It really seems to defy common sense but consider it this way: slightly inflate a balloon and draw some dots on it and then inflate it some more and you will notice that every dot is now further away from every other dot but none of those dots are at the "center". It was Hubble's observations that lead to the Big Bang Theory.
Supporting Observations According to Krauss " There are three main observational pillars that have led to the empirical validation of the Big Bang" (2012, p. 92). They are the Hubble expansion, the cosmic microwave background radiation and the amount of light elements predicted at the beginning of the universe compared to what we have measured. The balloon thought experiment mentioned earlier describes the Hubble expansion and is expressed as the equation: distance/time per megaparsec (Universe 101, n.p.). Since we can observe and measure the expansion and the rate of expansion matches Hubble's equation we know it to be

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