The Big Bang Theory

Science has given us many theories throughout the years. Some of them explain how humans came to be, why we all look different, etc. But there is one theory that probes much deeper and further into the past. Where did our universe and earth itself originate from?

Before modern science, people believed that the earth and cosmos were created by God. However, as intelligence advanced and technology came further, scientists have been looking for a more believable and plausible answer to this most intriguing question, as well as a detailed explanation of the creation. Why and how did it happen? And from what? The header in this research for years has been the Big Bang Theory.

The Big Bang Theory can be quite difficult to explain. The conclusions on it have been drawn by combining Einstein's theory of general relativity (or universal gravitation) to other aspects and conditions in galaxies. After many equations, we are left with the most believably plausible explanation of how our galaxy, as well as those around us, came to be.

From the most current conclusions it has been proven beyond reasonable doubt that the universe sprang from nothingness around 13.7 billion years ago. Then, out of this nothingness, there was something scientists refer to as a singularity. What exactly is the singularity, and where did it originate? Nobody knows, because there was nothing before it that scientists know of.

Singularities are believed to be unexplainable. They raise many physics questions with no proven answers, such as black holes. What is known about these singularities and what comprises their definition is that they have intense gravitational pressure, much like the core of the black hole. These have the power to take matter and squish it into a density so tight, it is considered infinitely compact. The Big Bang Theory states that our universe began as one of these infinitely compacted pieces of matter, which is not only infinitely compressed, it is infinitely hot. A singularity at its finest. And the Big Bang Theory goes from there.

After this singularity appeared from the nothingness (or the plain unknown), the Big Bang Theory states it started to lose heat, cool and expand. Even today this singularity is still cooling and expanding into the universe and galaxies that we now study. While the Big Bang Theory is often confused as having been a big explosion, scientists have agreed that this was not the case. It is merely a spreading out of one very hot fragment.

Imagine our whole universe sprung from a particle of dust invisible to the human eye. The Big Bang Theory states that everything on this earth and in the universe came from that teeny molecule which was packed with all the makings. Like a suitcase that has been forcefully stuffed and shut; this expanded when the bounding was released.

Our universe does not stop expanding. Galaxies keep getting further and further spread apart, as discovered by Edwin Hubble. How far will it extend out to? As infinitely compacted as it was, can it become infinitely expansive? Those questions still have no theories.

Sources:

www.umich.edu/~gs265/bigbang.htm