In this work we review measurements on cosmic-ray abundances
and radiation environment on board Mir (1995-2000) and International (2002-2008) Space Stations with active silicon detector telescopes. Additional scientific topics
goals involve the investigation of the Light Flash Phenomenon and its relation with nuclear fluence. Characteristics of the detectors employed (Sileye-1, Sileye-2, Sileye-3/Alteino, Altea) and some results are presented