The Milky Way has a diameter between 100,000 light years and 180,000 light years.
 The Milky Way contains at least one planet per star, resulting in 100400 billion planets, according to a January 2013 study of the five-planet star system Kepler-32 by the Kepler space observatory
The satellite galaxies surrounding the Milky way are not randomly distributed but seem to be the result of a break-up of some larger system producing a ring structure 500,000 light-years in diameter and 50,000 light-years wide

