Discus chronologicus by German engraver Christoph Weigel, published in the early is a paper chart with a pivoting central arm. Rings represent kingdoms, radial wedges represent centuries, and the names of kingdoms are printed on the moveable arm
German software designer Kai Krause created a map demonstrating the true geographical size of Africa, driving the point home by fitting a number of other countries — including the US, China and most of Europe — into the outline of the continent.
The surface of the Moon just got funkier. Variations in the lunar gravity field as measured by NASA's Gravity Recovery and Interior Laboratory (GRAIL) during the primary mapping mission from March to May (Courtesy: NASA/JPL-Caltech/MIT/GSFC)