The big bang theory : The evolution of universe
Probably most of us have used or heard of the term " big bang theory" . this is one of the most critical and promising theories of mankind. It is able to answer the questions like when, why and how everything came into existence. The name itself gestures about something like big explosion.
The explosion :
The Big Bang is the name given to the big explosion occurred about 14 billion years ago. The whole of the matter that wheresoever exists today was concentrated in a point a thousands of times smaller than a tip of a pin. The explosion filled the every corner of the space. It gave away all the raw materials that caused the formation of each and everything that we know and yet to be known.
The only thing that is unknown is that what existed prior to the big bang.
The survival :
The big bang threw all the constituents in all the directions at a very thing speed. They went apart. During their journey, several galaxies and other clusters were formed and they are still moving apart at high speed.
Edwin Hubbel proved that a galaxy's velocity is proportional to it's distance from earth. He also said that the universe is expanding at high speed in all the directions equally. This clarifies the idea that everything was confined in a poin before the explosion.
The explosion resulted in the formation of two importan particles namely matter and antimatter, in a extremely hot environment. Both the particles moved at a high speed. As the environment cooled down, there was a slightest difference between their amounts. Matter was dominant over antimatter. If they were of equal amount, they would have destroyed each other and the universe would never took this shape.
Nevertheless, we were Lucky enough.
Now on further cooling, the matter particles started to decay to give new particles called baryons( photons, neutrinos, deutrons etc).
On further cooling, gardens(protons and neutrons) started to exist.
The formation of the first elements of the universe :
Within 3 minutes of the formation of the universe, a heavy hydrogen isotope was formed as a result of proton neutron reaction. This isotope is called deuterium. Soon tritium was formed as a result of combination of deuterium with a neutron. In the next step, helium nucleus was created on addition of a proton.
But there were still left out else trons, neutrons and protons. These provided the formation of the hydrogen. These two were the first elements of our universe to exist. The Hubble telescope was able to discover the mixture of there two elements in the far located space. This make us believe the hypothesis to be perfect.
Although enough traces have been found in favour of this theory, it is still questioned and challenged by many.
With the latest discoveries its grip is getting more and more stronger.
However we can't say that no new experiment would put down this theory, but so long The Big Bang theory is the best explanation of the evolution the universe.
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