Physical Cosmology – Some of the Most Fundamental Questions

Physical Cosmology deals with the universe and the science behind the formation of the universe. 

There are several different lines of way to study any physical phenomenon or object in the Universe. You could see it in all of the ways that you can only imagine. This includes discovering its gravitational pull on other matter; identifying the chemical composition of a substance by examining its composition of atomic Hydrogen and Oxygen; studying the ultra-violet light spectrum through the use of polarized sunglasses; or studying the behavior of exotic objects through telescopes. The list goes on.

One of the most widely accepted ways of viewing the universe is with the help of general relativity.

In order to better understand how the universe works, general relativity gives us a method to examine the properties of space and time by observing it using a mathematical formula. Using this type of method, we can determine the mass and energy of every single element, in every point in space and time. Using this information, we can then figure out what must be done to get the normal matter to behave the way it does.

Albert Einstein was one of the first people to come up with the special theory of relativity. 

From this concept came many others, including general theory of relativity, quantum mechanics, and the structure of the universe. The first thing you would notice about these theories is that they are all mathematically similar. It’s like they are all built on the same foundation… “A goes B through C.” This similarity also made general relativity very easy to work with.

With physical cosmology, we still observe things in the universe that don’t conform to our exact understanding of it. 

For example, light elements are the most prevalent elements in the early universe. However, they don’t have the same vibrational rate as other elements. In order for us to see the light elements, we must analyze what happened before the Big Bang occurred. By doing this, we can begin to determine exactly how the various particles that we currently know of got their respective properties.

When you study the physical laws of the universe, you will learn that it works on two different levels. 

Source: Space.com

On a very basic level, the physical laws of the universe operate on a “large scale”, while on a smaller scale, the universe operates on a smaller scale. These two dimensions allow us to observe phenomena on a much smaller scale. For example, large-scale matter such as stars, quarks, and planets work on large scales, while super-small scales (planets, stars, and ripples) work on smaller scales. This is how general relativity came to describe the behavior of the universe.

In the early stages of physical cosmology, we didn’t have a complete understanding of the laws of the universe, so we had no way to tell if the universe was in an eternal state or not. 

Thus, we could not tell how old the universe was. We knew that it was expanding, but we couldn’t tell if it was expanding faster than the speed of light. There were theories in physics that suggested that the universe was old, but no firm evidence could be found to support this idea. Since the beginning of the 20th century, researchers have been using the theories of general relativity to study the behavior of the universe.

In the year 2020, a research group led by Dr. Michael Cieza of the University of Hawaii used a special kind of computer software to examine the orbits of thousands of galaxies. 

They discovered that none of the existing galaxies are in an eternal state of spiraling black holes. Dr. Cieza states that if the law of universal gravitation is applied to the universe, then the black holes are moving away from us at a much faster rate than the speed of light. This discovery proves that physical cosmology is not inconsistent with the known facts of science.

Although this discovery does not affect our daily lives too much, it has created a lot of interest in the field of astronomy. 

Physicists believe that there are several other mechanisms that may affect the behavior of the universe and these mechanisms could also explain some of the fundamental questions of our existence. They also believe that there could be other universes like ours, but they are yet to find any evidence for this hypothesis. Other theories that are being tested include the strong force-like gravity between two very similar objects and clusters of galaxies. Studying the properties of the large space towards the beyond could also shed light on the mysteries of physical cosmology.

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