1. One of the best-known Asterisms is the Big Dipper or Plough.It is composed of the seven brightest stars in Ursa Major, where they delineate the Bear's hindquarters and exaggerated tail, or alternatively, the "handle" forming the upper outline of the bear's head and neck.With its longer tail, Ursa Minor hardly appears bearlike at all, and is widely known by its pseudonym, the Little Dipper.