Cassinis and Ercole Bottani. In 1963 Giulio Natta received the Nobel Prize in Chemistry for his research on crystalline polymers, polypropylene in particular. In 1977, the satellite Sirio, jointly developed by the university and other companies, was launched. Since the end of the 1980s, the university has begun a process of territorial expansion that would have resulted in the opening of its satellite campuses in Lombardy and Emilia Romagna. A university program in industrial design was started in 1993. In 2000, the university's faculty of design was created with new courses in undergraduate and postgraduate programs of graphic & visual, fashion and interior design along with the already existent industrial design. In April 2012, the university announced that, beginning in 2014, all graduate courses would be taught only in English. This decision was then partially revised, after the decision of the Italian Supreme Court, that stated the Italian language could not be totally abolished nor downgraded to a marginal role. Campuses The University is spread over seven campuses: two main campuses in Milan and another five satellite campuses across Lombardy and Emilia Romagna. Milan Leonardo Milan Leonardo is the oldest of the university's campuses still in use. The first buildings on Piazza Leonardo da Vinci were inaugurated in 1927. Over the years, the complex has been expanded and is now generally referred to as "Città Studi", City of Studies, which also refers to some faculties of the University of Milan in the same area. The campus extends over several streets: Leonardo, Bonardi, Clericetti, Mancinelli, Gran Sasso and Colombo. The Leonardo Campus is the main campus of the university and comprises the central administration offices, the rectorate, and most of the research departments. Milan Bovisa The Milan Bovisa campus is located in the Bovisa district of Milan and became active in 1989; campus Bovisa is today composed of campus Durando, opened in 1994, and campus La Masa, inaugurated in 1997. The first is the seat of the School of Design, while the second is dedicated to Industrial, Mechanical, Aerospace, and Energy Engineering faculties. Bovisa also houses the related research facilities, including the wind tunnel. Other campuses The first satellite campuses opened in 1987 in Como and in 1989 in Lecco. During the 1990s other three branches opened in Cremona (1991), Mantua (1994), and Piacenza (1997). Academics The Polytechnic University of Milan offers several three-year undergraduate courses, two-year graduate courses, one-year master