The Beginning Of UNIVERSE

We know how the universe started ..... through big bang ....but what after that....we will read about that in this blog.... When the universe was very young — something like a hundredth of a billionth of a trillionth of a trillionth of a second (whew!) — it underwent an incredible growth spurt. During this burst of expansion, which is known as inflation, the universe grew exponentially and doubled in size at least 90 times. "The universe was expanding, and as it expanded, it got cooler and less dense," David Spergel, a theoretical astrophysicist at Princeton University in Princeton, N.J., told SPACE.com. After inflation, the universe continued to grow, but at a slower rate. As space expanded, the universe cooled and matter formed. Too Hot to Shine Light chemical elements were created within the first three minutes of the universe's formation. As the universe expanded, temperatures cooled and protons and neutrons collided to make deuterium, which is an isotope of hydrogen.

Let's start in a very simple way. One question certainly comes into one's mind ,where it all started?, how this universe came into existence?, how things like stars, planets etc came? Well scientists, Astronomer are looking for these answers for many years and there are many theories propsed of how our this big gigantic universe came into existence. Among all of these theories "THE BIG BANG" is most accepted theory all over the world. According to big bang universe that we see today started with an explosion and that is still continuing. At starting the whole universe that we know is confined in a single point, no fundamental laws of physics exist at that particular time, infact time also not existed. The point containing universe explodes and expands. It inflated to the next 13.8 billion years to the cosmos that we know today. It is still expanding. Now we know how it started... through an explosion. But how it is formed. Well lets discuss it in the next blog