[SOLVED] Reasoning behind the big bang theory Is there are way to qualitativly explain this, or is the math beyond most people? I understand that according to this model, the universe expanded from an unimaginably tiny particle with unimaginable mass desity, and that during the first fraction of a second, the expasion was substanstial. The concept is hard for me to accept, it seems so unreal, but many physicists subscribe to this model, and physicists are the most resonable people, so there must be some logic behind this. What experiments were carried out that confirmed this theory? Does one require a background in modern physics to grasp this logic? I only know some classical physics myself, so maybe Im just to ig'nant to be asking this!