A fiery red sun burns at the center of the composition. Its flames are not immaterial gases, but rather the solid, silver edges of an aluminum plate, cut to resemble the teeth of gears. Surrounding the sun, the solar system’s planets are fixed to similar aluminum surfaces, made to rotate around a central tab. Song pictures the invisible movements that govern the motions and relations of planetary bodies almost as mechanical processes. His mechanized planets simplify the chaotic forces of gravity and energy that determine orbital patterns, advancing instead an image of a “clockwork universe” that operates according to hidden, though regular and predictable, laws.