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The Big Bang Theory - Online Term Paper

The Big Bang Theory

“The Big Bang”

It is always a mystery about how the universe began, whether if and when it will end. Astronomers construct hypotheses called cosmological models that try to find the answer. There are two types of models: Big Bang and Steady State. However, through many observational evidences, the Big Bang theory can best explain the creation of the universe.
The Big Bang model postulates that about 15 billion years ago, the universe violently exploded into being, in an event called the Big Bang. Before the Big Bang, all of the matter and radiation of our present universe were packed together in the gigantic fireball, an extremely hot dense state from which the universe rapidly ...

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First, the red shifts of distant galaxies. Red shift is a Doppler effect which states that if a galaxy is moving away. However, as astronomers observed, the more distance a galaxy is located from Earth, the more red shift it shows on the spectrum. This means the further a galaxy is, the faster it moves (Hubbles Law). Therefore, the universe is expanding, and the Big Bang Theory seems like a reasonable explanation.
The second observational evidence is the radiation produced by the Big Bang. The Big Bang model predicts that the universe should still be filled with a small remnant of radiation left over from the original violent explosion of the primeval fireball in the past.
In the future, the universe may end up in two possible situations. From the initial Big Bang, the universe gained a speed of expansion. Galaxies will continue moving outward (continue to expand). All of the stars will die off as the last of their energy is released. Such a universe is said to be open. A ...

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"The Big Bang Theory." Essayworld.com. March 30, 2011. Accessed December 23, 2024. http://www.essayworld.com/essays/The-Big-Bang-Theory/97232.
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PAPER DETAILS
Added: 3/30/2011 08:36:28 PM
Submitted By: rfitts2
Category: Astronomy
Type: Premium Paper
Words: 478
Pages: 2

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