The map is being used in the study of dark matter but that is secondary to geographers and cartographers who love maps for being maps. The majority of the map shows the known universe from Earth to about 5.6 Billion Light Years away. Unlike other maps where the end of the map is an abiritory point that the cartographer detrimes; the end of this map is THE END. 13.7 Billion Light Years from Earth (that's 8.1 × 1022 miles away from Earth!), millions of light years away from anything we can see, is the end of the map and therefore the universe.
The map is in 3-D and therefore hard to be displayed. SDSS is releasing data for use in NASA World Wind (which I have a love/hate relationship with) and the public map can be viewed by using the SDSS option. (Hat Tip: atlas(t))
Category: Maps, Space