The Big Bang Theory Essay

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Astronomers believed the Universe was created about 14 billion years ago. During that time, the entire Universe was inside a bubble that was thousands of times smaller than a pinhead, and it was insanely hot and dense. Out of nowhere this little bubble started expanding. This expansion created what we know as the Universe. In such little time the Universe went from the size of an atom to the ginormous galaxy we have that is continuously growing. According to the Big Bang Theory the universe appeared as a singularity. Singularities are thought to exist at the core of black holes. These zones of infinite density are called "singularities." Our universe is thought to have begun extremely small, infinitely hot, and infinitely dense. As time …show more content…

This observation means that it has taken every galaxy the same amount of time to move from a starting position to its current position. This observation is called "Hubble's Law," named after Edwin Hubble (1889-1953) who discovered this in 1929. Edwin Hubble’s evidence supports the expansion of the universe and suggests that the universe was once compacted. Third, if the universe was insanely hot as the Big Bang suggests, scientists should be able to find some of this heat left over. In 1965, Arno Penzias and Robert Wilson discovered a 2.725 degree Kelvin Cosmic Microwave Background radiation which infuses the observable universe. This is thought to be the remnant that scientists were looking for. Finally, the discovery of great amounts of Helium and Hydrogen lead to support the Big Bang Theory. (LaRocco) So now that we have the basics of the Big Bang Theory, what happened after the initial expansion? In the fractions of the first second after creation what was once a vacuum began to expand into the universe. Immediately after the Big Bang the universe was tremendously hot as a result of both matter and antimatter moving apart in all directions. (For every type of matter particle, there also exists a corresponding antimatter particle. Antimatter particles look and behave just like their corresponding matter particles, except they have opposite charges.) As it began to cool there was about an equal abundance of matter and antimatter. As these two materials are

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