We all ask ourselves the same question, how this universe came into being? This maybe one of the biggest questions of all times, it's basically asking not only where

We all ask ourselves the same question, how this universe came into being? This maybe one of the biggest questions of all times, it's basically asking not only where did everything came from, but how did it all of arise from nothing. 

With the help of known scientific knowledge, when we look out at the universe, the full suite of observations we have collected, even with the known uncertainties taken into account, all point out towards the remarkably consistent picture. Our universe is made out of matter rather than antimatter. It obeys the same laws of physics throughout it's extent. There are some key factors which we can't ignore;

1) Universe began with "Big bang". About 13.8 billion years ago.

2) Universe is governed by the         " General theory of relativity".

3) Universe is constantly expanding, cooling and gravitating.

4) It is comprised of dark energy about 68%, dark matter about 27% and the rest is made up of normal matter, radiations and neutrinos.

Don't worry we are going to discuss it in a very polite and simple manner.

The life we have today comes from complex molecules, which must have arisen from the atoms of the periodic table. The Universe wasn't born with these atoms; instead, they required multiple generations of stars living and dying, with the products of their nuclear reactions recycled into future  generations of stars. Without this, planets and complex chemistry wouldn't be possible.

1) Gravitation have to pull small galaxies and star clusters towards each other, creating large galaxies and triggering the formation of new stars.

2) It required pre existing masses, created from gravitational growth.

3) Which require dark matter haloes to form early on, preventing star forming episodes from ejecting that matter back into intergalactic medium. 

4) Which further requires the right balance of normal matter, dark matter and radiation to give rise to cosmic microwave background, the light elements formed in the hot big bang. 

5) which requires initial seed fluctuations, density imperfections to gravitationally grow into these structures. 

6) which require some way of creating these imperfections, along with some way of creating dark matter and creating the initial amounts of normal matter. 

How did Universe got more matter than antimatter? 

That's how, Universe changed zero/nothing into everything. For this, we have to extrapolate back into the very early stage of universe to the point where much of the physics laws were uncertain. The laws of physics we know  are in some sense of symmetrical between matter and antimatter: every reaction we have created or observed can only create or destroy matter and anti matter in equal amounts. But the universe we had, despite beginning in an incredibly hot where matter and antimatter could be created asymmetrically. 

There are many ways to achieve this but we are not certain which way was adopted by the Universe. All ways does have following three common elements in them;

1) An out  of equilibrium set of conditions, which naturally arise in an expanding and cooling universe.

2) A way to generate Baryon number violating interactions which the standard model allows through Sphaleron interactions 

3) And, a way to generate matter/antimatter asymmetry in great enough amounts.

" The Asymmetry of matter and antimatter in the early hot and dense universe converted nothing into something which then eventually converted into everything we have today through cosmic evolution."

How did everything came from nothing?

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