A Higher Dimensional Universe . ... Credit Copyright: Mark Newbold Explanation: Does our universe have higher but unusual spatial dimensions ? ... In a new incarnation of an old extra-dimensional idea , some astrophysicists hypothesize that we live in a universe dubbed Ekpyrotic , where our four dimensions (three spatial plus one time) resulted from the fiery collision of two four-dimensional spaces ( branes ) in a five-dimensional universe . ... NASA Web Site Statements, Warnings, and Disclaimers . ...