Man versus Robot

We send robots to the Moon, to Mars, and beyond with much success. If one or two fail, we have lost some money but no lives. We don't live on Everest, nor in the oceans. Neither can we live for long in space. The main problem for space is the cosmic rays. Each time, you hear a journalist, that manned space travel to Mars is for tomorrow, think that man is not made to live, except in this thin layer surrounding the Earth. This is the Darwinian selection. What is new is that we can send robot to extend our knowledge of the Solar System.