# How Galaxies are mapped/laid out Galaxies are mapped based on a changing scale. At the most extreme, a single galaxy is composed of 4 equal sized quadrants. Each quadrant is then subdivided into however many Mega Sectors it is composed of. Each Mega Sector is made up of 1024x1280 parsec hexes in total. Thus each mega sector is composed of 128 x 128 subsectors, 32x32 Sectors, or 8x8 Super sectors, . 8 x 10 Parsecs = 1 Subsector. 4x4 subsectors = 1 sector or 32x40 parsecs. 4x4 sectors = 1 super-sector or 128x160 parsecs. 4x4 Super sectors = 1 mega sector or 512x640 parsecs. For example, Wikipedia says the Milky Way galaxy is about 26.8 kilo parsecs in diameter. Thus each quadrants would be 6.7 Kiloparsecs in size (26.8/4=6.7), both width and height. Or each Quadrant would be 6.7x1000 parsecs x 6.7x1000 parsecs in size, thus 6700. This gives each quadrant an X size of 837.5 subsectors, with a y size of 670 subsectors. 209x167.4 sectors, 52.3x41.9 super-sectors across, or 13x10.4 Mega-sectors. Thus the milky way is 26.2x21 mega sectors in total size.