A fluctuation-based approach is used to study the effect of variations
in the rate of movement of the Sun on the level of its activity and t
hat of variations in the Moon's field on the Earth's weather. The cons
equences of the correlations thus identified are studied, thereby enab
ling us to verify these correlations experimentally. It is shown that,
using these correlations, long-term forecasting of variations in the
solar activity and the weather is possible.