The physical properties of the solar system and its contents, along with the orbital dynamics necessary for solar system exploration by manned and unmanned spacecraft, are the major topics of this module. The phenomena of tides and the Roche tidal limit for planetary ring systems are explored within the context of Newtonian gravitation. Essentials of orbital dynamics for space-flight and solar-system exploration, including the Hohmann transfer orbit are developed. The orbital behaviour of solar-system objects, including comets, is examined and phenomena such as orbital resonances and Lagrangian points are discussed. Physical principles are applied to gain an understanding of fundamental planetary atmospheric phenomena, including greenhouse warming. Applications, such as remote sensing of planetary atmospheres, are also introduced. Models of the origin and formation of the solar system, including the process of planetesimal accretion are explored and placed within the context of current knowledge about the existence of planets around other stars. Results from recent space probes are used to highlight the presentation throughout the module. Students undertake a group learning case study of a past, current, or planned space mission and present their work in a report and in a talk.