Take a look at our friends' post, which features both the prime and backup crews for the 21st ISS visiting expedition honing the

Take a look at our friends’ post, which features both the prime and backup crews for the 21st ISS visiting expedition honing their survival skills. Discover more about the rigorous tests and training that aspiring astronauts endure in our film ’How I Became a Cosmonaut’. Источник: RT Documentary