Brief Answers to Cosmic Questions. Structure of the Universe Does the Universe have an edge, beyond which there is nothing?
Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? Does the term "universe" refer to space, or to the matter in it, or to both? Evolution of the Universe Did the Universe expand from a point? If so, doesn't the universe have to have an edge? We Are Here: The Pale Blue Dot. The Mystery Hexagon on SATURN. CG Solar System.