to come about that I have read over the last few years. Firstly, the idea of the Big Crunch ie the Big Bang in reverse, which in effect will run time 'backwards', resulting in forever occiliating 'bangs' and 'crunches'. And Secondly the ever expanding theory which will lead to the heat death of the universe - this seems vaguely related; surely if energy and matter no longer, for want of a better word, 'function' then would not time stop or cease to exist?