What was there before the Big Bang? Well, you see, there was no before because before the Big Bang, time did not exist. Time is a result of the expansion of the Universe itself, but what’ll happen when the Universe has finished expanding and the movement is reversed? What’ll be the nature of time?
If String Theory is correct, the Universe possesses nine spatial dimensions, and one temporal dimension. Now we can imagine that in the beginning, all the dimensions were twisted together and during the Big Bang, three spatial dimensions, the ones that we know as height, width and depth, and one temporal dimension, what we know as time, were deployed. The other six remained miniscule, wound up together.
Now, if we live in a Universe of wound dimensions, how do we distinguish between illusion and reality? Time, as we know it, is a dimension we experience only in one direction. But what if one of the additional dimensions wasn’t spatial, but temporal?
— Mr. Nobody