Quote Originally Posted by Coelho
Yes... but first we need to learn how to live in this Earth in a self-sustaining way. If until now we werent able to do this here, with all the needed resources so much more easily obtainable, how can we hope to live this way in the space, where the things will be FAR harder?
The earth is a closed system --- all of our pollution remains on the earth and poisions the ecosystems we need to survive. There are only a limited amount of resources and we further destroy the environment to extract them.

It is different in space. Space is not a closed system. Pollution does not need to pile up to poisonous concentrations. Solar energy falls on onbjects in orbit 24 hours a day, not just during daylight hours. Some asteroids are composed on nearly pure metal --- no mining, just saw off a chunk. The ecosystems we bring along can be very simple and artificial.

I'm sure it will be very diffcult to learn to live in space, but the advantage of being outside a closed system will be huge once we learn how to do so. I'm confident that if we do not kill ourselves off in the next 100 years, we will live in space.