Map of the Universe
For once for a slightly different map: PopSci has a geo-centric map of the visible universe as it was acquired over time, from 1950 (top) to 2011 (bottom), precisely:
Different object categories are coloured differently in the map. For example, the inner green ring above consists of minor planets, the blue dots are stars. In the interactive map (see links below) you can hover over certain marked objects to to get more information, often including an image.
In case you wondered, the Earth was “discovered: before 1950” ;)