The subject "space environment and mission analysis" addresses the study of the space environmental conditions to which a space vehicle is subjected, and the analysis of all the elements of systems engineering to be considered to define and characterize a space mission. Vacuum, microgravity, magnetic fields, radiation, plasma and meteorites are considered. The mission analysis focuses on the concepts of operation, the definition of operations, the functional architecture, the definition of requirements, the orbital calculation, the calculation of budgets by subsystems, the definition of the launch and reentry system, and the control of guidance of the space vehicle.