Abstract The Universe around us still contains many mysteries that are the subject of both our imagination and scientific research. One of the oldest questions is the question of creation. The currently accepted theory that addresses this problem is so called The Big Bang Theory. Even though there are still some skeptics regarding its validity, it is the hypothesis that has found solid evidence. This paper discusses the big bang theory, pioneered by George Gamow who based his ideas on the previous concept of exploding 'primeval atom.