Making Mars Habitable

I vote for magic trees and a ring of superconductors to recreate a magnetosphere. Also you'd need designed microbes/nano bots to remove things inimical to humans like the perchlorate and other stuff.

Easiest? Large dome structures with synthetic atmosphere.
 
Hi,

Perchlorates in Martian soil? Hadn't heard that. But it's actually a good thing and potentially a reason to colonise Mars. That's oxidents for rockets / explosives etc. If there's a high enough concentration you've got half a rocketry fuel resource right there. Great if you want to start mining asteroids in the belt just beyond.

Cheers, Greg.
 
Hi,

Odd question - all my questions are odd I suppose! Was working on a plot for a space opera based on life on Mars and the asteroid belts perhaps in the next hundred years, and wondered, what would it take to make Mars more habitable.

I had a theory which I'm sticking to, that the first thing it needs is more gravity so it can retain an atmosphere. And at present the only way we know how to do that would be to increase its mass. So my thought was to use the spent asteroids, after they've been mined for metals etc. Simply I suppose blow them up in low Mars orbit and let the dust settle - literally. So my question is, would this be at all feasible? How many and how big would the asteroids have to be? And how high could you get the gravity? Fifty percent Earth's? How much would you need it to be to hold a proper breathable atmosphere? (Also it occurred to me that some of those asteroids might contain water (ice) and frozen oxygen, so dropping them off might help with that side of things too.) Seizmic effects might be an issue I suppose too.

Any thoughts?

Cheers, Greg.

I think lateral solutions are more likely, like blood oxygenation, or even contained cities of some sort.
 

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