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	Q&A: Cosmology
                        
                    
            Q:
               Where on the web can I find a picture of the structure of the
               universe? The universe as currently mapped shows a fibrous
               structure, with large voids of about 150 million light years
               across. This picture, I presume, comes from light that started
               traveling from these galaxies several million years ago. Does
               this mean this picture was formed before the galaxies (or
               clusters of them) had a chance to travel much relative to each
               other?
              
               A:
               For a good image of the large scale structure of the universe
               try NASA's Astrophysics
        Data Base and searching the reference below.
               
                Reference: M. Geller, L. da Costa, J. Huchra, and E.Falco,
               Astrophysical Journal Letters, 424, L1 (1994). 
               
               
               
               
   
        



