The Enigma of Existence

Why is there a universe rather than nothing? And if there is a universe did it have to burst into being through the Big Bang? And if so, will the answer to the question: what caused the Big Bang? eventually be discovered, or will it remain a mystery forever? Or is there nothing mysterious about it at all? Is the suggestion that the Big Bang was a result of a divine act simply false, or devoid of meaning? The main argument of this essay is that a considerable amount of clarity will be achieved if we realise the radical difference between the kinds of hypothesis that are legitimate to account for events within the universe and events accounting for the very existence of the universe.