MASS is an Erasmus+, Joint Master Program in Astrophysics and Space Science. It is delivered by a Consortium of four Universities (Rome “Tor Vergata”, Belgrade, Bremen and Côte d’Azur) and a number of Associated Partners, including public research institutions, National Space Agencies, small and medium enterprises and space industries. Because of this, MASS has the ambition of being an inter-sectoral, research-oriented Master program, covering state-of-the-art knowledge and research in six main pillars: Gravitation and Cosmology, Stellar Astrophysics, Exoplanets, Astrophysical Techniques, Big Data, and Space Science. The goal of the program is to provide students with knowledge and skills tuned to continue their career in PhD programs, but also desirable to the private sector. MASS will offer to its students a number of curricula to help them to choose how to move among the four Consortium Members, and to better identify the chosen field of specialization. At the end, MASS students will be exposed to the theoretical aspects of modern astrophysics, to the knowledge/use/development of observational facilities and/or to the data reduction and science exploitation of big data set coming for current/forthcoming ground-based or space-borne experiments.