At BIRA-IASB, we develop kinetic models for the solar wind and its interactions with the magnetosphere of the Earth and other planets. Recent progresses were made especially for the solar wind for which our kinetic model takes into account the suprathermal particles observed in situ in this space plasma. In the magnetosphere, predictive kinetic models are also developed for different regions and especially for the plasmasphere. The model is coupled to the ionosphere and is dynamically influenced by the solar wind variations and geomagnetic activity. Radio waves are used to make observations needed for forecast, for boundary conditions and comparisons with model results.