in order to be prepared for any catastrophic event on Earth.
what kind of catastrophic event are we talking about here that could lead to annihilation of all nodes on earth worldwide that we need a space node?!! and what would we need that if the human race is extinct, or is it just extinction of computers on earth

This was the very question that popped in my mind when OP posted about catastrophic events. I honestly believe that if such ane event ecer happened, then basically all of humanity would cease to exist, rendering the usage of nodes in space useless. Of course, if space travel could be developed before such a thing happened, then things would take a different turn. But by then, I'd doubt that space nodes would be a particular problem or even the solutionby then might have exceeded what space nodes could do so there was no need for it.