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The Big Bang Essay

524 words - 3 pages

This is a power point on the big bang.The Big BangLauren KohlesPhysics 5February 24, 2005Definition An astronomy theory that says the Universe began with a super-powerful explosion. Georges-Henri Lemaitre is called by some, the father of the Big Bang Theory. The Big Bang is only a theory, it has not been proven true.Start of the Big BangThe big bang occurred about 14 billion years ago.Astronomers believe that the entire Universe was inside a bubble that was thousands of times smaller than a pinhead, and that it was hotter and denser than anything imaginable.It is ...view middle of the document...

It is estimated that the temperature of the entire universe was 1000 trillion degrees Celsius a fraction of a second.How Big is the Big Bang?Formation of the UniverseAs the Universe expanded and cooled, energy changed into particles of matter and antimatter which destroyed each otherOver the next three minutes, the temperature dropped below 1 billion degrees Celsius.Protons and neutrons survived and started to form when the Universe was one second old.Formation of the Universe contIt was now cool enough for the protons and neutrons to come together, forming hydrogen and helium nuclei.After 300 000 years, the Universe had cooled to about 3000 degrees, and atomic nuclei could capture electrons to form atoms.The Universe filled with clouds of hydrogen and helium gas.Interesting FactDid you know that the static on your television is caused by radiation left over from the Big Bang?CosmologyA branch of science which studies the evolution of our Universe.Cosmologists try to discover what the Universe was like billions of years ago and also what the Universe will be like billions of years in the future.Bibliography

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