The Sun is an ordinary star, just one among hundreds of billions of stars in the Milky Way Galaxy. Compared with the billions of other stars in the universe, the sun is unremarkable. But for Earth and the other planets that revolve around it, the sun is the most important star in our corner of the universe. It is a yellow dwarf star that averages a temperature of 5,700 Kelvin on its surface and is composed of layers made up almost entirely of hydrogen and helium.
University of Oslo offers various courses and research opportunities related to our Sun. Their Institute of Theoretical Astrophysics offers courses in solar physics, stellar structure and evolution, and stellar dynamics and chaos. The university also offers research opportunities in solar physics, such as the Solar and Heliospheric Observatory (SOHO), as well as various research projects related to our Sun.