Details: This poster shows a satellite map of the earth at night. Lights are visible from urban areas. At the bottom it says 'Earth by Night'.
Cartography is the study and art of mapmaking. It combines geography, aestetics and science to help creat realistic spacial representations of an area. A map is a simplified depiction of a space which highlights relations between components (objects, regions) of that space. Most usually a map is a two-dimensional, geometrically accurate representation of a three-dimensional space, e.g., a geographical map. More generally, maps can be devised to represent any local property of the world or part of it.