The exact nature of this big bang explosion may never be known. However there have been some theoretical breakthroughs, based on the principles of the “Quantum theory”. It is believed that before the universe began it was full of random actions creating a chaos, which is referred too as “Quantum weirdness”, it is believed that at some point in the randomness a small bubble was formed with an temperature in excess of 10 to the power of 34 degrees. Due to the immense temperature the bubble inevitably expanded. For an extremely short period of time (billionths of billionths of a second) the bubble inflated, at the end of the inflation the universe had a diameter of a few centimetres. The temperature had cooled enough for particles of matter and antimatter to form, and they instantly destroy each other, this destruction caused the huge explosion called the big bang. The Big Bang was the start of time and space.
Minutes after the “Big Bang” occurred the universe merely consisted of elementary particles such as protons, neutrons and electrons, which have been forced away from the center of the original explosion; there was also a lot of radiation at the time. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later, it condensed into galaxies, due to the effects of gravity pulling all the particles together.
One billion years after the forming of galaxies, the gravity began to grow stronger; and galaxies of stars began to form. As the millions of years passed planets began to form with in the newly developing galaxies, from matter joining together.
It was not until ten Billion years later that our sun and solar system began to form within the one of the many galaxies, which is known as Milky Way. Our sun was supposedly formed from the after effects of a previous super nova (death of a large star)
Hubble observed that distant galaxies in every direction are going away from us at speeds proportional to their distance. The big bang concept was initially related to this concept as it explains why distant galaxies are travelling away from us at great speeds. The theory also predicts the existence of cosmic background radiation (the heat left over from the explosion itself). In 1964, the big bang theory received a major boost when Arno Penzias and Robert Wilson, who discovered that this radiation existed and was arriving in all directions in the same amount.
Although many believe that this is how the universe was created the questions still remains that: Why did this explosion take place? Some may still prefer to call it an act of God.
