риск был очень велик в начале освое

риск был очень велик в начале освоения космоса, и поэтому отправляли собак в космос вместо людей. главной целью таких экспериментов была проверка невесомости на живые организмы.

Результаты (английский) 1:

the risk was very high at the beginning of space exploration, and so sent dogs into space instead of people. the main goal of these experiments was to test of weightlessness on living organisms.

Результаты (английский) 2:

the risk was very high at the beginning of space exploration, so the dogs were sent into space instead of people. the main purpose of these experiments was to test weightlessness on living organisms.

Результаты (английский) 3:

the risk was too great in the early exploration, and so sent dogs into space instead of people. the main purpose of these experiments was to check of weightlessness on living organisms.