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Author Topic: How habitable is Mars?  (Read 1939 times)

Kjartan Már

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How habitable is Mars?
« on: 24/12/2008 15:52:58 »
Kjartan Már  asked the Naked Scientists:

Living on mars.

Hey

you hear in media people contemplating humans living on mars.
my question is.. is it theoretically possible to live there with out space suits and all that necessary equipment. The atmosphere is non-existent. Is there a mantle which has a magnetic field that protects from solar-radiation ect ect, all these things that make earth extraordinary and nice to live on :).

thanks

K

What do you think?


 

Offline Supercryptid

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How habitable is Mars?
« Reply #1 on: 24/12/2008 18:37:30 »
You would die very quickly on Mars. Mars does have an atmosphere, but it is very thin. To an unprotected human, it might as well be a vacuum.

So what would happen if you stepped onto Mars in nothing but your street clothes? Well, you'd have only a matter of seconds before you fell unconscious. Vacuums do funny things to the human body. The fluids in your body would evaporate and you would expand in size. You would not explode, however. Human flesh is strong enough to prevent that from occuring. Your saliva would boil and cause your mouth to drop in temperature rapidly (liquids absorb heat when transforming from liquid to gas). You'd die in about 5 minutes or so from lack of oxygen. Even if the atmosphere was made out of pure oxygen it would still be too thin to breathe.

What if you held your breathe before stepping on Mars? The lower pressure outside of your body would cause the air in your lungs to expand until you experienced terrible internal injuries. You're best off not doing that.

Mars does not have a magnetic field like Earth. The radiation there is quite potent, too. I doubt very seriously, however, that the radiation would kill you before asphyxiation would.

You probably wouldn't freeze to death either. Although Mars is very cold, its very thin atmosphere would not conduct heat well from your warm body. It would take a while for you to get cold. Well, if you were barefoot then the soles of your feet might freeze quickly because they are in direct contact with the very cold ground...

In conclusion, Mars is a very deadly place.
 

Offline Mr. Scientist

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How habitable is Mars?
« Reply #2 on: 24/12/2008 19:36:59 »
Kjartan Már  asked the Naked Scientists:

Living on mars.

Hey

you hear in media people contemplating humans living on mars.
my question is.. is it theoretically possible to live there with out space suits and all that necessary equipment. The atmosphere is non-existent. Is there a mantle which has a magnetic field that protects from solar-radiation ect ect, all these things that make earth extraordinary and nice to live on :).

thanks

K

What do you think?

Not really. If you mean, ''can we grow crops on mars wearing suits,'' the answer is not as simple as that. The lack of natural sunlight, and temperature of mars, (which is really an ice-planet), would require a single space station a great deal of energy to sustain this process for periods of time which may be long. How would we power this energy for even greater periods of time, as mankind propogates? The idea here, is that we really wouldn't last long on mars.

 

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How habitable is Mars?
« Reply #2 on: 24/12/2008 19:36:59 »

 

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