Abstract
Developing optimal methods of Russian language training for astronauts who view the Russian language as a tool of professional and educational training is connected with a wide range of linguistic and didactic features. The teaching process is conducted with a view to form skills and abilities of rational verbal behavior in different situations of professional communication during a pre-flight training as well as in the space orbit. Mastering the Russian language is a very important factor for foreign astronauts since it leads to acquisition of special competence and professional knowledge in Russian.