Hyphenate The Earth is no different to any other celestial body out there in space. It merely moves along in space inertially. Even just one inch above the surface of the Earth is space, except that it has an atmosphere. Don’t hyphenate (direct formatting) The Earth is no different to any other celestial body out there in space. It merely moves along in space inertially. Even just one inch above the surface of the Earth is space, except that it has an atmosphere. Don’t hyphenate (character style) The Earth is no different to any other celestial body out there in space. It merely moves along in space inertially. Even just one inch above the surface of the Earth is space, except that it has an atmosphere.