The 10th Dimension
If you are curious enough, you can click here and listen to an explanation of the 10th dimension. May sound technical to some, so be prepared.
Here's an excerpt from the site:
In string theory, physicists tell us that the subatomic particles that make up our universe are created within ten spatial dimensions (plus an eleventh dimension of "time") by the vibrations of exquisitely small "superstrings". The average person has barely gotten used to the idea of there being four dimensions: how can we possibly imagine the tenth?When you reach the site, move your cursor to "Navigation" (the right side) then click on "Imagining the Ten Dimensions".