Some time during the creation of the universe 13.8 billion years back after the big bang, matter overpowered antimatter. During the early stage after big bang the universe was unstable. Matter and antimatter reacted and obliterated each other in big release of energy repeatedly.
Some how at that time matter won against antimatter and it survived. Since then, whatever we see on planet and around our solar system and space is all matter.
Our planet earth has about 510.1 million square kilometres in surface area. We are part of the solar system with sun in the centre. Our sun is whopping 109 times diameter then the earth.
Our solar system is roughly 122 AU in diameter where each AU (Astronomical Unit) correspond to 150 million kilometres!
Today with help of cosmic background radiation and other methods, we are able to trace back the sequence of events, which led to the creation of earth.
13.8 billion years ago, a catalytic event took place. We have named it “Big bang”. We are not certain what exactly caused this event. There are several theories but cannot be conclusively established.