International Standard Classification of Education : fields of education and training UNESCO Institute of Statistics en Physics 0533 Physics is the study of properties and interactions of matter and energy. It includes the study of astronomy and space science. Programmes and qualifications with the following main content are classified here: - Astronomy - Astrophysics - Chemical physics - Medical physics - Optics - Physics - Space science Opticians' practice is excluded from this detailed field and included in detailed field 0914 'Medical diagnostic and treatment technology'.