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krunckyesterday at 7:03 PM9 repliesview on HN

Mars has toxic levels of perchlorates in the regolith. That will require that humans never come in contact with the regolith or things that touched it. Those space suits that dock to vehicles seem like a necessity.

https://en.wikipedia.org/wiki/Perchlorate#On_Mars


Replies

tim-tdayyesterday at 7:20 PM

Yeah, the ground on mars is literally toxic. Makes the concept of a Martian colony less appealing. Almost equal to a floating station on Venus. At least there you’d have the correct pressure. I seem to recall that the temperature on Venus at an altitude of one atmospheric pressure is manageable. It’s just also acidic. Possibility easier to deal with than perchlorates.

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chromacityyesterday at 7:55 PM

Calcium perchlorate is only slightly toxic. Not good for you, but living in an environment with background radiation levels 50x higher than on Earth may be your bigger worry...

Still, I'm pretty sure we have plenty of people who wouldn't mind giving it a try.

LorenPechtelyesterday at 9:07 PM

Personally, I suspect all anoxic environments will turn out to be unhealthy for humans. You'll have a bunch of reactive stuff about that on Earth would have been neutralized long ago.

mr_toadyesterday at 8:45 PM

> That will require that humans never come in contact with the regolith or things that touched it.

It’s really only a concern if you ingest it.

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darknaviyesterday at 7:36 PM

If this fact piques your interest, the book Delta-v by Daniel Suarez glances off this fact and uses it to justify exploring asteroid mining instead of a colony on Mars.

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imglorpyesterday at 7:42 PM

Or effective decontamination performed in the airlock. There was a recent demonstration of an electrostatic repulsion device reducing dust on suit fabric which might help with sticking. And an air shower like used for clean rooms does not seem too far out.

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ck2yesterday at 7:35 PM

there's a great PBS Space Time for that (of course)

https://www.youtube.com/watch?v=O5FqozA4IpA

aaron695yesterday at 11:01 PM

[dead]

snthpyyesterday at 7:11 PM

TIL