Hello, all. The proposed method, explaining the 11-year solar cycle, is based on an unusual theory, according to which some fundamental physical constants, including the speed of light in vacuum c, which we consider universal for the entire Universe, have different values in the spheres of influence of other stars, planets or space objects. Analyzing this theory, I assumed that for any two space objects that have gravitational attraction and revolve around their power centers in accordance with Kepler's laws, their speeds of light c1 and c2, and gravitational parameters µ1 and µ2 are interco