During the semester there is a colloquium on topics in astrophysics every week. In general, colloquia are 45 minute reviews on topics of general interest by local researchers or by guests. Some of the colloquia are more specialized, but last only 20 minutes and are given by members of the Institute of Astronomy to inform about their current work.

The lecture with exercises gives an introductory treatment of stellar structure and evolution: Observational foundation for stellar evolution theory. Physical processes in stellar interiors. Theory for the structure and evolution of stars. Nuclear synthesis of the chemical elements.

The lecture gives a general introduction to solar physics. Contents: Energy production in the Sun. Solar neutrinos. Phenomena in the photosphere, chromosphere, and corona. Structure and dynamics of the magnetic fields. Solar activity. Generation of solar magnetic fields and origin of the 11-year cycle. Solar instrumentation.

The lecture with exercises gives an introduction to key areas of theoretical solar physics: Dynamo processes for the generation of stellar magnetic fields and the origin of the 11-year solar cycle. Magnetohydrodynamic models of the Sun's structured atmosphere. Diagnostic methods. Energy equilibrium and transport in the solar atmosphere. Theory of the solar wind.