Starspot regions occurring preferentially in large clusters could be the cause of the strong brightness fluctuations of solar-like stars.
In cosmic comparison, the Sun is a bore. While the brightness of some other stars with similar characteristics fluctuates strongly, the Sun’s variations are much more moderate. Scientists from the Max Planck Institute for Solar System Research (MPS) in Germany, from the Turkish-German University and Boğaziçi University in Turkey, and from Kyung Hee University in South Korea, have now investigated how exactly sun- and starspots affect this…