In a study published in Nature Communications, researchers from the Leibniz-Institut for Astrophysics Potsdam (AIP) and the HUN-REN Research Centre for Astronomy and Earth Sciences (HUN-REN CSFK) have reconstructed the temporal changes in the distribution of surface spots on the red giant star XX Trianguli. The research is based on a unique series of spectroscopic observations carried out by the STELLA robotic observatory over 16 years.