The Big Bang Theory: The Origins Of The Universe

1002 Words5 Pages
One of the oldest questions, one that has been asked since humans gained cognitive thought, has been, where do I come from? This usually results in an interesting discussion with your parents, but today we’ll be looking at it in a different way. Where did everything come from? Hi, I’m Gordon, And I’m Connor. And we’ll be talking about the origins of the universe. Though there are other, less known theories, the most commonly accepted scientific theory to explain how the universe was created is the Big Bang theory. The big bang theory is a theory that states that sometime around 14 billion years ago the entire Universe was an extremely dense and hot singularity less than a centimetre wide which, when the energy exceeded its limits, exploded…show more content…
The steady state theory was popular during the mid 20th century, though is now rejected by most cosmologists, physicists and astronomers. The steady state theory describes our universe as one that never changes in terms of the density of matter. According to the steady state theory new matter is constantly being created to preserve this density. This model contradicts the big bang theory as the steady state theory suggests that the universe is infinite, or without…show more content…
These theories are the Big Bang theory and the Steady State theory, but the big Bang theory is generally held to be correct. The Big Bang theory is supported by the presence of Cosmic Background Radiation and the fact that the universe is expanding at an increasingly rapid rate. The Steady State theory has been abandoned by cosmologists, physicists, and astronomers because of the lack of evidence supporting it and the mass of evidence contradicting it. The theories that have been formulated in order to explain the end of the universe include the Big Crunch and the Big Yawn. The Big Crunch states that the universe will continue to expand to a point until the acceleration generated by the Big Bang is overwhelmed by the force of gravity, which will result in the universe being pulled into a central point and condensing into a singularity similar to the singularity at the start of the Big Bang. The Big Yawn is an alternate theory for the end of the universe which states that the universe will continue to expand until the second law of thermodynamics takes effect, at which point it will slowly descend into a total lack of thermal energy. This theory has had much less research put into it, mostly because of the lack of evidence supporting it. Of the two theories, the Big Crunch is more widely accepted by physicists and cosmologists
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