Superior Jazz
Time is finite. It has been prooven that time and space are not completely independant... the faster you move through space, the slower your timeframe. The closer you get to the speed of light, the slower time goes. it may not be entirely noticable, but it still happens. Therefore, time and space flow together, not independantly. Before the Big Bang, there was nothingness. Therefore, with nothing, time can't have existed. When the Big Bang began, time was created, since there was space to flow with. It has been said that the Universe will eventuially stop expanding, and will contract until it undoes the Big Bang. At that point, time will cease to be, since there will no longer be space to flow with.
The Big Crunch model actually show's the universe crunches then expands then crunches then expands then crunches.
http://tenthdimension.com/
Maybe this might help answer your question :S
Edit:
I thought it just went into the flash movie, when you go to that link click on media rich version then click on Imagining the tenth Dimension, it will explain every deminsion including time.