Quote:
Originally posted by Ironman
Even if the atmospheric composition could be made to be exactly the same as that on Earth, it would be like breathing at 30,000 feet. Some kind of compressor would be needed.
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Nah, the atmosphere could be alot more vast than that. All one has to do is look to Venus or any of the gas giants, as well as many of the giant's moons, to see that atmospheres can be alot bigger than Earth's. I've never heard anyone question that the pressure on Mars could be made similar to Earth, except for a question about quantities of specific types of gasses. The reality of the whole thing is that if enough CO2 could be released increasing the pressure to the point that a habitat being holed wouldn't be catastophic, then all that is required for humans to breath would be CO2 filters and a compressor. We have both of those allready. Additional equipment may be required to extract/simulate the other gasses needed, nitrogen will be difficult.