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THEORIES OF THE ORIGIN OF THE UNIVERSE
1. Steady State Theory – based on the perfect cosmological principle that the universe looks the same from any location at anytime. This theory holds that the universe is unchanging, it has no beginning and no end.
2. Big Bang Theory – presupposes that the vast universe grew out of something where all matter and energy were compressed to infinite density and heated to trillions of degrees (a beginning which was an immensely small particle of high-density state. The four basic forces of nature – gravity, electromagnetism, strong and weak atomic forces – were unified in that tiny particle. This particle exploded into a great fire ball releasing the basic forces. Rapid expansion took place and then the fire ball started to cool and slow down.

Of these two theories discussed, the Big Bang theory is the most popular.
What are the evidences for the Big Bang Theory?
1. The universe had a beginning –......

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Approximate Pages: 7 (250 words per double-spaced page)

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