i want a realistic image of the following description of the universe. the universe exists on the surface of a sphere. the entirety of the sphere is pure emptiness except for the surface. at the beginning of a cycle to singularity the entire universe exists on one single point in that sphere. "the big bang" propelled all matter in the universe and sent it around the surface of the sphere where it all will eventually find singularity again on the other side. i want to see one of these universes with countless more in the background.