This course, by Prof. Fulvio Franchi, will provide the students with the basic knowledge of planetary geology with particular focus on celestial bodies that are currently under the spotlight because of ongoing and future missions, i.e. Mars and Enceladus. The course is divided in 10 hours of lectures (online) and 6 hours of laboratory activity (only for physical attendees). During the lectures the students will acquire knowledge on the geology and geomorphology of Mars and they will enter the fascinating world of planetary exploration, discussing of past, ongoing and future missions.