After reading all of this thread, and poking around the web some, I think the universe has always existed. It's the only conclusion other than it was created by God. The universe could not have sprang from nothing. Nothing is nothing. The big bang would have had to start from something. Like mentioned before, it expands and contracts like it was breathing. The expansion just appears to have come from some big bang. Like said before here (and in DroneLore's sig), it just is. Or we could be the most miniscule part of a cell membrane in an unimaginably huge organism. Horton Hears a Who to the most possible extreme.
I totally agree....it is so hard to tell if we really know anything at all... Look at an ant on the sidewalk, imagine how different life is for him. Same goes for us living on mother earth. I always feel like we are the bacteria crawling her body.... The Universe is so massive there is no way we could ever understand what it is.....We THINK we know what it is....time is something we observe, how much other scientific knowledge becomes irrelevant in the bigger MUCH BIGGER perspective of things.
Those three words alone are not at all helpful. What are we going to call a moment? A planck unit of time? Because that is sort of a measurement.
Think about it a while, maybe it will come to you. You asked thedope why we couldn't measure this moment in time. The Heisenberg Uncertainty Principle explains why. Just the simple act of observing alters that which is observed.
But, he said, "a creator God provides a reasonable and credible explanation of why there is a universe, and ... it is somewhat more likely that there is a God than that there is not. That view is not undermined by what Hawking has said." Hawking's book will be published on September 7 in the United States and September 9 in the United Kingdom.