The science and practice of calculation and representation of a geographical area, usually on a flat surface such as a map or chart. It may involve the physical or geographical features, superimposition of political, cultural, or other non-geographical divisions, or the distribution of socio-economic, political, agricultural, meteorological, or other information. Each point in the representation will correspond to an actual geographical position according to a fixed scale or projection. The term map also apply to those who study and calculate similar representations of the positions of stars, planets, the surface of other planet, or the like.