With a presentation called "The Shape of Space from Black Holes to the Wraparound Universe", Dr. Lumnet literally transported people to a 3D universe, in which he showed his three-dimensional model called "Space Dodecahedron. "

This research borned in 2003 where the astronomer design a model about the size of the space who was then confirmed by satellite observations. This model  is fully explained in the book "L‘Univers Chiffonné", ie, the Universe wrinkled.