SCIENTIFIC THEORIES ABOUT THE ORIGIN OF THE UNIVERSE- THE BIG BANG

THE THEORY OF THE BIG BANG

This theory was first born with a Belgian priest named Georges Lemaitre, who suggested the big bang theory in 1920s, when he therorized that the universe began from a single primodial atom. Then this therory had more recogniton by Edwin Hubble´s observations, wich explained that galxies are speeding away from us in all directions, Finally the theory was given more reputation because the discovery of cosmic microwave radiations by Arno Penzias and Robert Wilson.

Basiclly this theory stablishes that nearly 14 billion years ago, there was nothing. Then suddenly, due a random fluctuation in a empty void, a universe exploded into existence. A subatomic particle inflated to unimaginanly huge size in a very brief period of time, driven apart by a negative pressure vacuum energy. 

References:

Tate K. (2014). Alternatives to the big bang Theory Explained (infographic). Recovered from: http://www.space.com/24781-big-bang-theory-alternatives-infographic.html

National Geographic. (no date). Origins of the universe. Recovered from: 

http://science.nationalgeographic.com/science/space/universe/origins-universe-article/