Description of the solar system: physical and orbital properties (planets, satellites, small bodies). Fundamentals of Celestial Mechanics: equations of motion, perturbation theory, gravitational and non-gravitational forces. Stability of the solar system: secular orbital perturbations and climate, resonant motion. Space exploration: artificial satellite orbits and use, design of interplanetary trajectories. Extra-solar planetary systems: observational techniques, dynamics and systems classification. Theory of planet formation: proto-planetary discs, planet formation and evolution of young systems. Time-line of our solar system.