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Kimmo Huosionmaa
Scientists have found water on the surface of the planet Mars, and that would be given the change to build the base to that planet. The water will give the capacity to produce the drinking water at the Mars, and build the greenhouses on that planet. Also, water might be used in the electrolytic process, what allows to produce the hydrogen and oxygen on the surface of that planet. Those gases can be used in the fuel cells, what is capable to use in the vehicles, what are used on the surface and of course hydrogen and oxygen are necessary for the rockets, what will be launched to the Martian orbital, and there those capsules will be connected to the nuclear rockets, what will bring them to the earth.
The problem of the Martian base is that the costs of that operation would be gigantic. But in the hypothetical Mars station might also use the advanced biotechnology to produce more sophisticated food that only the vegetables. Also, the milk and flesh can be produced by using the cell plantages. Those methods are actually very simple, we must just take the cells, what produce milk and then put them to the plant, but that would be quite an expensive way to produce those products.
But the problem with the Mars-station is the price. There must find something, what will be used in the factories, that the making the base to that planet will be seriously considered. But if there would find some minerals, what can be used in the factories on the Earth, the nuclear rockets or interplanetary shuttles would be the expensive way to bring that cargo to the Earth.
Those interplanetary shuttles would work by the nuclear thermal NERVA rocket, and they would be position at the orbiter, where the cargo would deliver to the planet surface, with the conventional shuttles. But the costs of this fictional space program would be extremely high. Of course, there would be the change to deliver those minerals at the very low cost. This solution bases the extreme powerful rail-gun, what uses the nuclear reactor for giving the power supply for that extreme powerful accelerator.
Giant rail-gun will be shooting the capsule to the earth by very powerful magnetic rails. If that railgun will be used, the spacecraft would be needed on the energy for breaking. Or if we would use our imagination, there might be the magnetic baskets, where those space probes would be taken. Those magnetic baskets would be just very powerful magnets, what would be decreasing the speed of that space probe.
But this way to travel between the planets is far in the future. And the accelerator must build two places Earth orbiter and another device must be position in the Martian orbiter. And there would be giant technical problems about that solution, but maybe in some day in distant future, there would be station and cities on the red planet.
Sources
http://www.iflscience.com/space/evidence-salty-water-flowing-mars/
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