neutrino78x":jd0leal6 said:Mars Direct is a highly sustainable architecture. You are again assuming that we are only doing science on Mars. My purpose for going to Mars is not science, but colonization.
Your colonists won't be landing on a continent with fertile soil, breathable air, edible flora and fauna or liquid water.
As I have mentioned every cubic centimeter of living and agricultural space will have to be enclosed in an artificial environment.
Where does this artificial environment come from? It would have to come from earth.
There is no mining, manufacturing or transportation infra structure on Mars. Establishing such an infra structure that would enable colonists to enlarge their colonies from in situ resources would be a gargantuan task.
No, a few decades would come nowhere near establishing a self sufficent colony. Nor would ten decades.