This book describes in detail the helical structure of the Solar System. In the 1960s astronomers studying the orbital motions of stars in other galaxies and realized the Sun must be moving in an orbit around the center of the Milky Way. This requires each planet in the Solar System to follow a helical (spiral) path as it orbits the Sun. In spite of that, however, the old flat-orbit concept, although obsolete, is apparently still being taught in our schools. This book was written in the hope students, as well as the general public, can finally begin to learn the newfound understanding of how our Solar System has always operated. The text explains the new concept and is based on the information discovered by astronomers in the last half of the 20th century.