The scientific evidence points to the reality that the universe appears to have leapt into existence out of nothingness. A tiny spec known as the singularity, beyond which all known laws of physical break down, exploded into being and has expanded thereafter to be the universe of today. http://www.linkcollider.com/ We use the term explode because there is no other better way to describe the extreme rate of expansion from the singularity, but this rate of expansion was very finely tuned. This expansion was so fast and the release of energy so great that the event was deemed to be termed the Big Bang.