Space exploration has always been a hallmark of national accomplishment. During the 1950 – 1980, USA and USSR were head to head in space exploration. Yuri Gagarin from Soviet Russia became the first human to be in space in as early as 1961. Since then, We have come a long way not just in terms of exploration but also in terms of technology sophistication.
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.