The Big Bang Theory

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Recommended: The big bang theory of the origin of the universe

We know for certainty that our universe exists, however, being the curious beings we are we want to know how the universe came to be. There are many theories out there that try to explain it. One of the most known and taught of theories is the Big Bang Theory. This theory suggests that 13.7 billion years ago all the matter in the universe came from a singularity (zones which defy the current understanding that we have of physics; they are thought to have infinite density and extreme heat). Unexpectedly, that singularity began to expand and the universe came into being.
Big bang theorist base their theory on the following evidence. One of the evidence that supports this theory is that galaxies appear to be moving away from us at speeds that are proportional to their distance. This is known as Hubble’s Law it’s named after Edwin Hubble who is credited for the discovery of this phenomenon in 1929. Hubble observed that the universe is expanding in every direction, which makes us come to the conclusion that the universe was once compact and is now moving away from the point of origin.
Since the universe is thought to have come from a singularity which is said to have a extreme heat in it, it was believed that there should be a background heat still in existence in the universe. In 1965 two radio astronomers, Arno Penzias and Robert Wilson, discovered a 2.725 degree Kelvin (-454.765 degree Fahrenheit, -270.425 degree Celsius) Cosmic Microwave Background radiation (CMB) that is spread out across the universe. This is believed to be remnants of the extremely high-temperature from the big bang.
Scientists have discovered that the universe contains about 74 percent hydrogen and 26 percent helium by mass, the two lightest elements. How do...

... middle of paper ...

...s said to be 13.7 million years old.
Due to that the universe is extremely lumpy, with massive super clusters of galaxies and great voids in space. Thus the background radiation left from the big bang must be the same. But it’s not the background radiation is smooth. In order for background radiation to work and support the big bang it must not be smooth, but should be more intense in certain direction than in other, indicating in homogeneities at the very start of the universe so that it matches the way the universe is set up right now.

Works Cited

http://www.universetoday.com/54756/what-is-the-big-bang-theory/ http://www.big-bang-theory.com/ http://space.about.com/od/astronomybasics/a/Origin-Of-The-Universe.htm http://www.exploratorium.edu/origins/cern/ideas/bang.html http://www.icr.org/article/big-bang-theory-collapses/
http://creation.com/bye-bye-big-bang

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