Earth Circler is a term used to describe someone who travels around the world, usually in a circular route. This term can be broken down into two crossword solutions: Equator (7 letters) and MOON (4 letters). The Equator is an imaginary line that divides the Earth into the Northern and Southern Hemispheres and is located at 0 degrees latitude. The MOON is Earth's only natural satellite and orbits the planet at an average distance of 238, 855 miles.