Nuclear reactions in the stars and in the laboratory

The paper discusses the reaction rates at low energies, needed for the desc ription of nucleosynthesis processes. In contrast to the stellar environmen t, the laboratory measurements are complicated by the coulomb potential scr eening caused by bound electrons. The consequences of recent Be-7+p reactio n measurements on solar modelling are presented. The new high-energy laser facilities will open new possibilities for measurements of stellar reaction rates.