Creation of the universe seems to be a puzzle, which requires much knowledge of physics. Moreover, the Big Bang Theory is very popular among people who want to explore the cosmos. Although there are many things to know about it, only some people realize how important it is. In general, the Big Bang Theory can help us learn much about the evolution of the universe. This paper aims at discussing main aspects of the Big Bang Theory and introducing them to non-scientists.
The Origins of the Big Bang Theory
As mentioned before, the Big Bang Theory explains the origin and evolution of the universe. This theory postulates that the universe appeared as a point of infinite temperature and density. Then the universe started to expand. While doing so, it started to cool down. As a result, subatomic particles appeared, then atoms, stars, and galaxies. The Big Bang Theory is proven by many experiments conducted by physicists.
One of the proofs of the Big Bang Theory is cosmic microwave background radiation. It represents the remnant energy from the explosion. According to this theory, this energy is one of the oldest energies in the world. Thus, studying this radiation helps scientists better understand the nature of the Big Bang Theory.
Expansion of the Universe
Another important part of the Big Bang Theory is the expansion of the universe. At the same time, this issue has already become a subject of active investigation in modern science. In particular, many scientists are interested in measuring the speed of expansion. To do so, scientists conduct many kinds of experiments. Some of them study the motion of celestial bodies while others analyze cosmic background radiation.
Nowadays, scientists claim that the universe continues to expand even after the moment of the Big Bang. As for the reason why this happens, scientists say that it is dark energy which is the cause of the universe’s expansion. Today this energy is known as a component of the universe which makes about 68% of the latter’s energy.
Dark Matter and Dark Energy
Apart from dark energy, another component of the universe is dark matter. As opposed to dark energy, dark matter is a kind of substance that is invisible because it neither emits nor reflects any radiation. Scientists infer its existence because of the influence of dark matter on other substances. In total, dark matter constitutes 27% of the universe’s energy density. As for the composition of dark matter, it includes weakly interacting massive particles.
Dark energy is the name of some forces existing in empty space. According to scientists, dark energy accounts for 68% of the universe’s energy density. The importance of dark energy for cosmology lies in the fact that dark energy is one of the forces responsible for the expansion of the universe. It is said to be a repelling force which tears matter apart.
Formation of the First Stars and Galaxies
One of the aspects of the Big Bang Theory is related to the formation of the first stars and galaxies. This process took place in the first 100 million years after the universe originated. Those stars, which are called Population III, were quite large and had short lifespan. These stars occurred in areas with the largest gravity. Furthermore, their appearance led to the birth of the first galaxies.
Formation of the first stars and galaxies continues to be explored by scientists today. Currently, they conduct simulations as well as carry out other kinds of experiments to discover more about this process. In general, it should be admitted that the formation of stars and galaxies plays an important role in the Big Bang Theory.
Future of the Universe
At present, no scientist can give an exact answer regarding the future of the universe. Nevertheless, many assumptions have already been made in relation to the evolution of the cosmos. In particular, there is the concept according to which universe will continue to expand until a certain limit is reached. Then the "Big Rip" takes place. All matter gets destroyed in this process. Some scientists suggest that the opposite may happen and the universe may "rip" into several parts. Nevertheless, this is only assumption at the moment.
In general, the Big Bang Theory helps scientists predict future changes in the universe. In addition, the information provided by this theory may be very useful for the further development of cosmology. Thus, new discoveries about the universe should be expected in the near future.
Explanation of the Big Bang Theory to Non-Scientists
Exposition of the Big Bang Theory to non-scientists is an important task. As mentioned above, this theory describes the origin and evolution of the universe. Therefore, it is necessary for everyone to know about the Big Bang Theory. To facilitate this process, scientists use many techniques to explain the essence of this theory to ordinary people.
For instance, it may be suggested using metaphors and analogies while explaining this theory. One may compare the universe to a balloon which inflates and gets colder. Another example is comparing the universe to a piece of dough which is pulled by different directions.
