The Big Bang Theory

6 Pages 1519 Words

My report is about the Big Bang Theory. It contains three major points, which are the origin, how this theory was formed and my thoughts about the theory. First, I will start with how the Big Bang Theory came about.
No one really knows how the solar system was formed. The Big Bang Theory is one of many ideas about how the whole universe came about. It can best explain the creation of the universe by scientist.
According to this theory the universe started ten to twenty billion years ago. It started when all the matter and energy of the universe was pull together by gravitational sources into something like a plasma ball. This ball consists of subatomic particles and radiation. As the matter expanded it cooled sufficiently for element to form. Protons and electrons combined together to form hydrogen. Most of the gases contain hydrogen. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later it started to form galaxies. It continued to expand. They are still expanding today. That is one way that astronomers believe that the big bang theory is true. They have not found another way to explain it. This might be that the reason the universe will not stop its expansion. It is because, if the universe attained a speed of expansion and if it was greater than the universes own escape velocity, then that would cause it to keep expanding. If the universe has achieved escape velocity, which is not absolutely correct then it would continue forever and the stars would redden and die. This space would become even emptier. As the years stretch on and on nothing will remain. Only a few primitive atoms and electrons would orbit each other at distances of hundreds of astronomical units.

In 1927, the Belgian priest George Lemaitre was the first to propose that the universe began with the explosion of the primeval atom. His theory came from observing the red shift in distant nebu...