Heavenly Route is a term used to describe the path of the Milky Way, which is the galaxy that our Solar System is located in. The term is made up of two words, ARC and THEMILKYWAY, which are the solutions to a crossword puzzle. ARC is a three letter word meaning a curved line or shape, while THEMILKYWAY is an eleven letter word referring to the Milky Way. Together, these two words form the phrase Heavenly Route, which is used to describe the path of the Milky Way.