I wavered in the past from starting a thread on this subject because I thought it would break some rules but I think if I word it correctly, there should be no problem. You know how this goes. The Universe cannot be eternal because, irrespective of what new physics we learn, an eternal Universe is logically unpalatable. We could have never gotten to the present point if time went back infinitely because for us to arrive at this present point, an infinite amount of time should pass. There simply cannot be an infinite series of events, there has to be an event that itself was not caused that started the whole thing going. Now, this sounds pretty reasonable to a newbie but I was always curious what is the answer cosmologists and physicists give to this dilemma. I mean, these people live their lives thinking about the Universe, surely this must have passed through their mind. And more precisely, those cosmologists that adhere to a model of the Universe that is Eternal. I just find it hard to think that they would not have an answer to this question.