Since the dawn of interplanetary missions, spacecraft telecommunications systems have been exploited to improve knowledge about the atmospheres, ionospheres, rings, surfaces, and interiors of solar system bodies. The process, known as radio science, involves the propagation of a signal from a transmitter to a receiver, working together effectively as one instrument. We welcome submissions on a wide range of radio science techniques to study solar system bodies, from large planets and their moons to small bodies. The applications include, but are not limited to, traditional ground-based orbitography and satellite-to-satellite tracking to investigate planetary interiors, planetary ionosphere and neutral atmospheres, surface roughness and dielectric constant, solar wind properties, and long-range gravitational theories.