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 * The Big Bang Theory**
 * ​ The Big Bang Theory is the currently accepted explanation of the beginning of the universe. The big bang theory proposes that the universe was once extremely compact, dense, and hot. Some original event, a cosmic explosion called the big bang, occurred about 10 billion to 20 billion years ago, and the universe has since been expanding and cooling. The theory is based on the mathematical equations, known as the field equations, of the general theory of relativity set forth in 1915 by Albert Einstein.** [|Word-Mysteries.com]



If the Big Bang were the first event starting the beginning of the universe, what do you think existed //before// the Big Bang? Please add your responses in the discussion box below.

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Common Misconceptions regarding the Big Bang:

1. Many people visualize a big explosion. Experts say that rather than an explosion, it is more of a continuous expansion, much like an extremely small balloon gradually expanding to the size of our universe.

2. Another misconception is that we tend to image the event as a little fireball appearing somewhere in space. According to the many experts however, space didn't exist prior to the Big Bang.

For an Overview of the Big Bang Theory, check out this website: [|Big Bang Theory- an Overview]



The 1929 discovery by Edwin Hubble that the Universe is expanding at a high rate of speed was revolutionary! [|NASA explains the Big Bang]

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