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19 March 2024, Thuringia, Jena: View of the large lecture hall in the main building of the Faculty of Physics and Astronomy at Friedrich Schiller University Jena. On the Day of Physics and Astronomy in Jena, the faculty invited visitors to get a taste of science, studying and working life. There will be hands-on experiments, lectures and laboratory tours. Photo: Martin Schutt/dpa (KEYSTONE/DPA/Martin Schutt)