Creation of universe

Space has always fascinated me. Since my childhood I wanted to go to space. Not only me, many of you had dreamt of exploring the space.  ...

Space has always fascinated me. Since my childhood I wanted to go to space. Not only me, many of you had dreamt of exploring the space. 

But have you ever wondered how we were created? How the whole universe was created? Who created universe? I am quite sure that these type of questions must have strucked your mind at least once.

This is a topic which holds a lot of mysterious and also the answers to lot of them...this is a topic which can't be explained in a few paragraphs.

First of all....What is universe?

Universe can be defined as everything that exists. This includes matter , all types of energy, planets,stars,galaxies clusters or even the voids or emptiness belongs to the universe.

There are a lot of theories that suggests how the universe was created but let us discuss 3 most famous of them.

1.The big bang theory:

I am pretty sure you must have encountered with this theory. This is the most famous and widely accepted theory. It was proposed by Georges lemaître. According to this theory, the whole universe was concentrated in a extremely small , hot and dense point which had infinite mass and charge which exploded nearly 14billion years ago scattering all the matters in all the direction resulting in the formation of everything that exists today. According to this theory, stars and galaxies are still moving away from each other because universe is expanding.

2.Steady-state theory:

It was proposed by British scientists Sir Hermann bondi, Thomas gold and Fred Hoyle in 1984. According to this theory , the mass of the whole universe is constant and the no.of galaxies in the universe is also constant. According to them, new galaxies are created in the empty space to fill up the gaps formed by the galaxies which cross the boundary of the universe.

3.Pulsating theory:

According to this theory, our universe is pulsating. It also accepts the fact that universe is expanding now but it will stop expanding at a certain time and will start contracting due to gravitational force. With the time, contraction will lead to a explosion which will again start the universe. And the cycle will continue in this pulsating universe.

In all these theories which one do you think is most appropriate? Personally I like the pulsating theory as it is able to explain both the contraction and expansion in universe.

Although we can only rely on the theories proposed by the scientists and can only wonder about the mysterious of the universe.