galaxy |ˈgaləksē|noun ( pl. -axies)a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.• ( the Galaxy) the galaxy of which the solar system is a part; the Milky Way.• figurative a large or impressive group of people or things : a galaxy ofboundless young talent.The Galaxy in which the earth is located is a disk-shaped spiral galaxy with approximately 100,000 million stars. The sun is located about two thirds of the way out from the center.ORIGIN late Middle English (originally referring to the Milky Way): viaOld French from medieval Latin galaxia, from Greek galaxias (kuklos) ‘milky (vault),’ from gala, galakt- ‘milk.’