What is the Meaning & Definition of Big Bang

The Big Bang or the Big Bang theory is one of the most popular and widespread theories that exist about the origin of the universe and believes that it was the product of a tremendous burst. The name of Big Bang is due to the British astronomer Fred Hoyle and was a product of the intention of this call in a pejorative way to this theory which was not all agree. By the way. the astronomer was the author of the steady state theory.
According to what is proposed the Big Bang, was suddenly and the same nothing and after happen is a great pop emerges matter and as a result the universe. The shock wave of the outbreak was able to radiate in all directions and created what is today called as universe.
Meanwhile, the matter that began to disperse in a fantastic manner after the Big Bang was composed of fundamental particles such as photons, electrons, positrons, among others, Baryons.
The first elements that constitute the universe would have been produced immediately after the Big Bang and in moments in which the temperature was really high and the present density generated the fusion of particles in chemical elements.
Elements such as hydrogen and helium were the first that appeared after the explosion and the heavier components came after these, seemingly in the very same stars. A theory on the appearance of galaxies and star holds that when helium and hydrogen cooled is condensed in those stars.
Worth noting is that since the explosion occurred the universe did not stop expanding and as a result astro physical objects began to move more and more, presenting the distances that we appreciate them today.
Recently, the specialized center of Harvard University scientists who just study this topic found evidence of gravitational waves that would help with the theory of the Big Bang.