One of the (rather few) pieces of science Andy Weir’s The Martian hand-waved around was the radiation shielding. In the book/film, a special fabric habitat was enough to protect the humans. Technology like that doesn’t exist. You need meters-thick water, ice, or rock.
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“But we need a backup planet in case this one is ruined!” There is virtually nothing we — or the Universe — could do to Earth that would make it less habitable than Mars. Global warming, nuclear winter, extinction-level asteroid... still easier to live in caves here than there.
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Small side-question Katie; Would I be correct in guessing that the absence of a significant magnetic field means that if Mars _was_ ever terraformed that it *still* wouldn't be able to hold onto it's atmosphere, and would just lose it space all over again?
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That’s my understanding, yes. Not sure of the timescales, though.
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Thanks. Mars is now off my bucket list.
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Just put it at the very end and you’ll be fine
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If living on Mars means living deep in a cave, it would be easy to simulate the experience perfectly here on Earth.
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1) Find deep cave 2) Remove all the air 3) Make the soil toxic 4) Reduce gravity to 1/3 5) Set up some kind of messy radiation source nearby just to see what it does to you
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I love this video that explains so much of why Mars would be a death sentence:https://www.youtube.com/watch?v=uqKGREZs6-w …
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They'll just wear homeopathic magnet bracelets and be fine.
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Nah they will cure themselves with lavender and tea tree oil.
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