MofAllSelf, please disregard McCann entirely as he has not one clue about science.
Gromwald seems to have read the Wikipedia article but still lacks a clear understanding.
Let's begin and try to unravel this mystery correctly.
First, let us find your level of understanding of: Minkowski Space, de Sitter Space, Anti de Sitter Space, and subatomic string theory (we will leave the dissertation on M-theory for subsequent discussion).
It will help that you understand a bit more about space-time and mass-energy interactions than you will receive on the Science Channel.
Please contact me with your current level of understanding and we'll go from there.