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Re: How would you colonise space?
I want to make something plain. Rockets can't be used to colonise space.
Any viable project to colonise space won't start in earnest for some decades, and won't be finished (in terms of bulk supply from earth) in the next 100 years. Before then the oil will run out. In the unlikely event that it hasn't, we still dare not use it. We will have burned so much that global warming will be a mater of racial survival. How could we create the rocket fuel to deliver thousands of tons of supplies into orbit every year?
Right now rocket power is about as cheap as it is ever going to get. In future hikes in oil prices are going start pushing the price up again.
The future of space is in electricity. Nuclear powered or solar powered. Electromagnetic canon into near earth orbit, and ion drives from that point on.
Furthermore teraforming mars is not the quick or the efficient way of making life better for a few hundred or perhaps few thousand colonists. Mars will have to be colonised as it stands, in much the same way as the moon must. Teraforming will be a matter for their descendants. I do not believe that earth's politicians can hold together a project of such costs over such a long period of time for the benefit of a small foreign population.
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