it is important to understand what Big Bang Theory (BBT) is and is not. Contrary to the common perception, it is not a theory about the origin of the universe. Rather, it describes the development of the universe over time. This process is often called "cosmic evolution". Over the last several decades the basic picture of cosmology given by BBT has been generally accepted by astronomers, physicists and the wider scientific community. However, no similar consensus has been reached on ideas about the ultimate origin of the universe. This remains an area of active research and some of idea current ideas are discussed below. That said, BBT is nevertheless about origins
In addition to being a theory about the origins of the basic building
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In both cases, the model implies that the universe is expanding into some larger, pre-existing volume. In fact, the theory says nothing like that. Instead, the expansion of the universe is completely self-contained.
People often have difficulty with the idea that "space itself expands". An easier way to understand this concept is to think of it as the distance between any two points in the universe increasing. First, the distance between A and B is a function of time and second, the distance is always increasing.
To really understand what this means and how one would define "distance" in such a model, it is necessary to have some idea of what Einstein's theory of General Relativity (GR) is about: "Space tells matter how to move, matter tells space how to curve." Another way of describing GR would be something like: "Energy determines the geometry and changes in the geometry of the universe, and, in turn, the geometry determines the movement of energy".
So, given this, how does one get BBT from GR? The basic equations come directly from Einstein's GR equation under two key assumptions: First, that the distribution of matter and energy in the universe is homogeneous and, second, that the distribution is isotropic. A simpler way to put this is that the universe looks the same everywhere and in every direction = cosmological principle.
If we adopt these simple assumptions, the implications for the geometry of the universe are quite profound. First, one
David states that the widely accepted cause of the universe, which consists of a very large explosion whose aftermath was the universe, “doesn’t really account for that original… something that exploded.” (Woody 14). This quotes demonstrates how even though it explains the universe’s beginning, the big bang theory does not explain how the things that caused it, which is the quantum vacuum and a singularity in it, came to be. David thus
How does this relate to the age and origin of the universe? The principle is really quite simple: if the velocity and distance to most galaxies are known, one can extrapolate their motion backward to find the time that they were all compressed together at the moment of the universe's origin, the Big Bang. The duration between then and now is the universe's age. Of course, a simple linear extrapolation won't do; the gravity resulting from matter in the universe can be
Typically, cosmological arguments occur in two different phases. The first phase’s purpose is to provide the premise that there is a ‘first cause’ or an
When writing an essay, different drafts are created that can change the original idea on what the essay should be about multiple times. The same is true for many different things; including the views on the structure of the universe and Earth’s place in it. Many different people have studied and come up with idea about the universe, but two people who challenged what they were told and changed everyone’s minds were Copernicus, and Galileo.
There have been many theories concerning what the universe looks like, how it became this way, and where it is going. The most popular theory that people hold today is that the universe began when all the matter ever present in the universe was contained in a tiny speck and that spec exploded. This is known as the Big Bang. This theory has developed a great deal since it was first conceptualized and continues to evolve today. Many different scientists have had a hand in this.
The earth's size is getting neither bigger or smaller, it is staying the same size. Looking at the scientific law of conservation of matter it states that "No new rock material is neither being created or destroyed. Rock is recycled" (Principle of conservation of matter). This statement proves that the earth isn't getting bigger or smaller because no rock is being created or destroyed. If there is no new rock being created there isn't a way for the earth to grow, and if no rock is being destroyed then there is no way for the earth to shrink.
To start off, all the information used in this essay is from “The Known Universe” by Christopher M. Graney. Chapters 1-6 discuss a variety of topics that all fall into the subject of “The Center of the Known Universe”. The first chapter helped introduce the idea of how astronomy is as old as science. Also, it discusses the basis that science does not try to uproot religion: it simply tries to explain why things are the way they are. We must learn science for ourselves and forget everything we have been taught about astronomy thus far.
However, they seem few, because the space between is vast, if not infinite, like the stars that fill the living skies, yet are millions of miles
As many scientists over the years have been observing, the universe is continuously expanding. The galaxy's velocity is proportional to its distance. Also, that galaxies that are 3 times as far from us move 3 times as fast too! Going back to the expansion part, the universe is just not expanding in one direction, but in every direction there exists! This observation proves that it has taken the equivalent amount of time to move from a common starting position to its current position And since the universe has been continuously expanding there are more and more clusters of galaxies, this. The phenomenon of the galaxies, which are moving farther away from each other, is commonly known as the Red Shift. As light from the distant galaxies come on earth there is a significant increase of space between earth and the galaxy, which leads to wavelengths being stretched.
Scientists can confirm that the space between galaxies in the universe is growing, but we have no real way of knowing how far they will move. We can only see about 10 billion light years out into the galaxy due to the fact that most of the light in the universe hasn't reached us yet. Although there is no way of knowing for sure, scientists believe that the universe extends beyond our horizons, and therefore believe that the space between galaxies will continue to expand infinitely.
One such necessity was having to abandon the notion that the universe, on the large-scale, was static, a point we had maintained since ancient times. Another monumental change in our thinking came about from the notion that in order for the universe to be expanding, it had to have been smaller at an earlier point continuing to become smaller and smaller, which is what we know today as the Big Bang theory.
Now bend that paper in half so those two points are right on top of each other and imagine (since you can’t draw this one) the line representing the new shortest distance. Now consider, if you will, being able to do with actual space itself. Bending the entire universe, and this time I mean physically bending it to be able to change the shortest distance to such a distance that it’s like being able to take a step there, but since physically bending it is even weirder, we’re metaphysically bending it by sending broken up particles to another point where they will be reconstructed into the item originally broken up. One could even argue that in this process the original is copied and destroyed and an entirely new one walks away, or if it isn’t a live thing, a new one is obtained, but in such perfect detail to the original, or if this isn’t its first time it’s gone, a perfect copy of another perfect copy, meaning that there would be no complications caused by moving a copy. But we’re humans, and once this technology is real, it is my own personal belief that this won’t be a perfect process. So space is a physical thing that can be represented by say, a piece of paper, and then that piece of paper can be physically bent to describe the physical to metaphysical relationship to how it works when someone would bend it to make the shortest distance between the two points event shorter.
General Relativity is a two part theory created by the German physicist, Albert Einstein. The two sections of relativity is special relativity and general relativity. Special relativity focuses more on lines, constant-velocity motion on the mass of objects, the passage throughout time, and that passing the speed of light is impossible. General relativity deals with accelerated motion, gravitational fields on mass, size, and time. General relativity also states that matter and space effect each other and that the universe ends and there may be more universes out there. Relativity also includes space-time. Many people think that space and time are completely different variables, but physicists often combine them into “space-time”. Space-time is a four-dimensional coordinate system used in relativity and other areas of physics. The dimensions are, length, width, height, and the 4th is the time dimension.
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
Space is huge. The universe is bigger than we can get it. The universe is large to the point that stars bigger than our Sun or even entire systems look like little pinpoints of light since they are so far away.