2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121072We review some modern applications of the theory of few-body encounters between binaries and single stars. Then we focus on a new treatment of adiabatic encounters, in a regime which is of importance in encounters between a star and a planetary system in a star cluster.8 pages, 2 figures. To appear in Few-Body Problem, Annales Universitatis Turkuensis, C. Flynn, ed. Small correction to Fig.1Astrophysicstext