"Constellations are an invention of the human imagination. They are an expression of a desire to order the chaos of the night sky. For farmers who wanted an agricultural calendar, for shepherds who needed a nightly clock, for navigators and explorers dividing the sky into recognizable groupings, constellations were a practical necessity. The constellation figures are symbolic, celestial allegories in which humans can honor and recognize sacred animals, deities, and moral tales. Throughout the centuries artists have depicted these groupings of stars. The images of these groupings and creatures have been created and recreated with various similarities and differences."