Mapping the Universe - Mapping Scientific Frontiers: The Quest for Knowledge Visualization - page 72

Fig. 2.24 A map of the universe based on the SDSS survey data and relevant literature data from
the web of science. The map depicts 618,223 astronomic objects, mostly identified by the SDSS
survey, including 4 space probes (A high resolution version of the map can be found at http://
cluster.cis.drexel.edu/ cchen/projects/sdss/images/2007/poster.jpg )

Fig. 2.25 The design of the circular map of the universe

Figure 2.27 shows the center of the circular map of the universe. The Earth
is at the center of the depicted universe - we are of course aware of what the
Copernicus revolution was all about. The logarithmic scale shown on the map, along
the Northeast direction, gives us a rough idea how far away an object is from the