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Mars Soil Appears To Be Able To Sustain Life

beckerist writes "Scientists working on the Phoenix Mars Lander mission, which has already found ice on the planet, said preliminary analysis by the lander's instruments on a sample of soil scooped up by the spacecraft's robotic arm had shown it to be much more alkaline than expected. Sam Kounaves, the lead investigator for the wet chemistry laboratory on Phoenix, told journalists: 'It is the type of soil you would probably have in your back yard, you know, alkaline. You might be able to grow asparagus in it really well. ... It is very exciting for us.'"

44 of 337 comments (clear)

  1. Growing Asparagus on Mars... by ForestGrump · · Score: 5, Funny

    It would probably lead to a very smelly planet.

    --
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    1. Re:Growing Asparagus on Mars... by sheepweevil · · Score: 5, Funny

      What a way to motivate new colonists...

      Join the exciting new Mars colony! Wide open spaces! All-you-can-eat asparagus!

    2. Re:Growing Asparagus on Mars... by jawtheshark · · Score: 4, Funny

      But it would be tasty, produce oxigen and it provided an aphrodisiac(*). What more do you want?

      (*) I know that's bollocks..

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    3. Re:Growing Asparagus on Mars... by Anonymous Coward · · Score: 5, Funny

      Only on Slashdot would someone spell "oxygen" wrong and yet correctly spell "aphrodisiac"...

    4. Re:Growing Asparagus on Mars... by crontabminusell · · Score: 4, Informative

      How about potatoes?

      Because potatoes require an oxygen-rich soil and also prefer a slightly acidic soil. =)
    5. Re:Growing Asparagus on Mars... by _KiTA_ · · Score: 5, Informative

      But it would be tasty, produce oxigen and it provided an aphrodisiac(*). What more do you want?

      (*) I know that's bollocks..

      Perhaps enough Gravity to hold down said newfound oxygen?

      http://www.physicsforums.com/showthread.php?p=1759493
      http://www.philforhumanity.com/Terraforming_Mars.html
      http://en.wikipedia.org/wiki/Terraforming_of_Mars

      The problem right now is not the temperature or the sun, we have some forms of life that could handle Mars right now, as far as I know (Asparagus, for example, as well as plenty of microbes). The problem is the plant just isn't heavy enough to keep gas close to it.

    6. Re:Growing Asparagus on Mars... by clone53421 · · Score: 5, Funny

      Only on Slashdot would someone spell "oxygen" wrong and yet correctly spell "aphrodisiac"...

      Priorities, priorities!

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      Alexander Peter Kristopeit bought his basement from his mommy for one dollar.
    7. Re:Growing Asparagus on Mars... by drinkypoo · · Score: 5, Interesting

      You know, I see people say this kind of thing all the time, but I have never seen any kind of statement about how fast Mars will lose its atmosphere, except in Kim Stanley Robinson's Mars trilogy where it is asserted that the rate of loss is actually quite slow. The only one of your links which actually addresses the rate is Wikipedia: "It is generally thought that Mars could once have had an environment relatively similar to today's Earth, during an early stage in its development. This similarity is predominantly associated with the thickness of the atmosphere and abundance of water, both considered to have been lost over the course of hundreds of millions of years. The exact mechanisms which resulted in this change are still unclear, though several mechanisms have been proposed." Uh, that's not exactly a ringing endorsement of your view. So, can you provide a reference for the speed at which Mars is supposed to lose a human-breathable atmosphere?

      --
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    8. Re:Growing Asparagus on Mars... by everphilski · · Score: 5, Insightful

      My brain is pretty fried right now to do it (long day at work), but you really need two data points:

      1. escape velocity of mars

      2. distribution of the velocity of the molecules comprising the proposed atmosphere

      There are some relatively simple kinetic models for #2 that do a decent enough job. Long story short, if the bulk of the distribution of #2 is greater than #1, then the gas will escape, as it has more velocity than escape velocity. At what rate? Again, depends **how** far above escape the bulk of the distribution is.

      Here on earth, the vast bulk of the distribution(s) of each of the consitutents of air fall under the escape velocity of earth - so we lose very little in the way of our atmosphere to space. But we do lose a little here and there. The lower escape velocity on Mars is what hurts its atmosphere potential.

    9. Re:Growing Asparagus on Mars... by drinkypoo · · Score: 4, Informative

      OK! I was hoping someone with high speed internet access would do this for me, but I did it. NASA says that much of Mars' atmosphere was lost to pressure from the solar wind, but "[...] solar wind erosion was likely much more effective in the past than it is today." Some believe that Mars' atmosphere was lost mostly due to collisions from a variety of potential impactors. Apparently you can or once could take a class at uoregon which would teach you that there was insufficient temperature for [Martian] water to remain as a liquid, so it froze out leaving CO2 as the primary component in the atmosphere. Which is OK, that's an atmosphere! We want it for warming (CO2 is great) and for providing pressure so that we can survive with an air mask (for which purpose it would be fine.) I mean, an oxygen atmosphere would be dandy, but any atmosphere would be an upgrade. However, it might also have been 7.5 bar of CO2 when Mars was young, which would be a bit excessive for our purposes. Actually, .5 bar would probably do the job, although it would certainly limit the value of suction-based pumps in a non-pressurized environment...

      --
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  2. They're a little late in the year for asparagus by Anonymous Coward · · Score: 4, Funny

    Let's hope the lander doesn't break down before next year's asparagus season.

  3. FTA: by Farmer+Tim · · Score: 5, Funny

    You might be able to grow asparagus in it really well. ... It is very exciting for us.

    And I thought I didn't get out much.

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    1. Re:FTA: by __NR_kill · · Score: 5, Funny

      growing weed should be more interesting, over there it's nobody's jurisdiction :)

    2. Re:FTA: by Anonymous Coward · · Score: 5, Insightful

      They went to great lengths to avoid contamination of the Mars environment with life from Earth. One of their objectives is to see if there's life on Mars, remember?

    3. Re:FTA: by v1 · · Score: 4, Interesting

      they go to great lengths NOT to bring life to mars. Read up on "bio-barrier". If the spacecraft get contaminated during construction or prep they have to re-sterilize it. They want to find life, not spread it.

      If you accidentally bring life to Mars, that makes it about impossible to discover it and know for sure it's Martian life and not something you brought, or that mutated from something you brought.

      Although I agree that if we determine there is NO life on mars, I say our next probe is sent with a well-planned variety of "colonizer" lifeforms to begin teraforming of the planet so it's at least borderline useful by the time we can send people out there.

      --
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    4. Re:FTA: by 93+Escort+Wagon · · Score: 5, Insightful

      Well, while the soil may very well be conducive to growing asparagus, the temperatures most certainly are not. Asparagus is fairly hardy (depending on the cultivar), relatively speaking; but surviving -70C (or even -70F) is too much to ask of the plant.

      I must say this is the first time my knowledge of vegetable gardening has ever come in handy on Slashdot!

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    5. Re:FTA: by NewbieProgrammerMan · · Score: 4, Funny

      Although I agree that if we determine there is NO life on mars, I say our next probe is sent with a well-planned variety of "colonizer" lifeforms to begin teraforming of the planet so it's at least borderline useful by the time we can send people out there. Wow, I hope we send people there much sooner than that. I seem to recall that it would take many, many centuries to make Mars borderline useful.

      That is, unless somebody's done us the favor of leaving a giant insta-terraforming machine lying around there, in which case we just need to send Ahhnold to staht de reactor.

      --
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    6. Re:FTA: by Farmer+Tim · · Score: 4, Funny

      I bet they don't read Slashdot though.

      Of course not. Slashdot is more interesting than asparagus, though sometimes not as intelligent.

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    7. Re:FTA: by zappepcs · · Score: 4, Funny

      Well, that's easy, Monsanto has a patent on growing produce in off-world ecologies. Clearly NASA does not have the budget to pay Monsanto royalties

    8. Re:FTA: by jimmux · · Score: 5, Insightful

      Can we ever conclusively determine that there is no life on Mars?

      Given that we are still uncovering life in the most unlikely places on Earth, who knows where it could be found on Mars. Do we need to look under every rock, and take a billion core samples before we are satisfied that the introduction of terrestrial life will not destroy any chance of finding native life?

  4. 1 cubic meter? by bob_herrick · · Score: 4, Insightful

    TFA refers to a 1 cubic meter sample (35 cubic feet). That is one sweet lander...

    1. Re:1 cubic meter? by pushing-robot · · Score: 4, Insightful

      In a related martian breakthrough, apparently an asteroid hit Mars with an energy of "1029 joules, which is equivalent to 100 billion gigatons of TNT."

      I assume they meant 10^29 J. But still, the inability of most scientific journalist's to even check the plausibility of their figures is astounding.

      The original text was probably a word/rtf/odf document with the "29" in superscript, but the superscripting got stripped out during conversion. Happens all the time.
      --
      How can I believe you when you tell me what I don't want to hear?
  5. Re:send seeds by Rogerborg · · Score: 4, Funny

    Lichen, although don't beat yourself up about being unable to find that information despite having the totality of human knowledge at your fingertips. Your mother probably drank a lot during pregnancy.

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  6. Martian Red by JustOK · · Score: 5, Funny

    Martian pot is what I'm waiting for. I'm sure it would be outta this world.

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    rewriting history since 2109
    1. Re:Martian Red by Shadowlore · · Score: 5, Funny

      Given the gravity differences, an ounce of of pot on Mars would get you *much* higher.

      --
      My Suburban burns less gasoline than your Prius.
  7. NEWS FLASH! by ROMRIX · · Score: 5, Funny

    You might be able to grow asparagus in it really well. ...

    I can see the headlines now in all the papers, when this quote goes mainstream;

    TOP SCIENTIST CLAIM MARS SOIL SUPPORTS ASPARAGUS LIKE LIFE FORMS!
  8. Asparagus on Mars by Anonymous Coward · · Score: 5, Funny

    Just more evidence that Big Asparagus has co-opted our national science agenda.

  9. Re:send seeds by NoobixCube · · Score: 4, Interesting

    The problem with having the totality of human knowledge at one's fingertips is the necessary base knowledge. I know nothing about plant life, beyond that I need to mow the lawn every so often. I wouldn't have known to look up lichen as a possible candidate for growing on Mars. I thought lichen was like moss, and needed darkness and damp conditions.

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  10. Re:AP News Article by Falkkin · · Score: 4, Informative

    Wait... pH over 7 means a solution is "salty"? Salts are electrically neutral; surely they meant "alkaline" or "basic".

  11. Re:AP News Article by nanoakron · · Score: 4, Informative

    umm...pH over 7 means alkaline, not salty.

  12. Re:AP News Article by AKAImBatman · · Score: 4, Interesting

    "It's typical of the soil here on Earth minus the organics," Kounaves said during a teleconference from Tucson, Ariz. ...

    i.e. We're still missing the magic ingredient: Nitrogen. Getting a sufficient quantity of nitrates to Mars might end up being the biggest problem with colonization efforts in the future. We obviously have water. CO2 can be reprocessed into O2.

    The soil is not toxic. Now all we need is Nitrogen and a good method of bootstraping industrial production on Mars. (Shipping heavier technology would be impractical.)

  13. Re:Life? by Anonymous Coward · · Score: 5, Informative

    as opposed to coming from Earth as contamination during any of our Mars missions? Great pains are taken to make sure any and all things landing on Mars from Earth are completely serile. The concern you mention was a pretty big one - when scientists first figured out how to solve it decades ago.
  14. The Soil, Maybe, But What About the Environment? by Azuma+Hazuki · · Score: 5, Interesting

    Has everyone forgotten Mars has no ozone layer? The soil may contain the necessary minerals and other nutrients, but it's baked under UV rays and (last I heard) full of peroxides and other unfriendly chemicals as a result. Starting with plants is putting the cart before the horse; we should be thinking about extremophiles if we're serious about this. And would it be ethical?

    --
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  15. Life on Mars by joshtheitguy · · Score: 5, Funny
    Fry: Back in the 20th century we had no idea there was a university on Mars.

    Farnsworth: Well, in those days, Mars was just a dreary uninhabitable wasteland. Much like Utah. But unlike Utah, it was eventually made livable.

  16. Re:Only a 'might'? by EGSonikku · · Score: 4, Informative

    Well, the *soil* might be capable of supporting Asparagus, but the seeds might not like the temperature, atmosphere, or ambient radiation.

    --
    - "Scientia non habet inimicum nisp ignorantem"
  17. How about the cocoa plant instead? by davidwr · · Score: 4, Funny

    After all, Mars and cocoa go together like IBM and genetic sequencing.

    --
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  18. not that interesting by commodoresloat · · Score: 4, Funny

    Can you imagine? You get the munchies, and all there is to eat is asparagus? Ugh.

    1. Re:not that interesting by Kjella · · Score: 5, Funny

      Can you imagine? You get the munchies, and all there is to eat is asparagus? Ugh. Actually, yes I just imagined a bunch of hippies sitting on Mars eating asparagus. It's a good thing I don't have a therapist, because that could have gotten expensive.
      --
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  19. Re:The Soil, Maybe, But What About the Environment by SeekerDarksteel · · Score: 4, Funny

    The ethical concerns have already been addressed. If the martians don't like our plans, they can file a formal complaint. The plans will be properly displayed for a sufficient duration in the bottom of a locked filing cabinet, stuck in a disused lavatory with a sign on the door saying 'Beware of the Leopard'.

    --
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  20. Re:AP News Article by jonfr · · Score: 4, Informative

    Ocean is usually ph 8.5 or higher. However, in some areas on the planet earth the soil has high ph value (not acid). Plants do well in that type of soil, as do most living things.

  21. Re:What every Mars Lander story needs... by kevintron · · Score: 5, Insightful

    You get excited about this? My friend, you should try taking some LSD, or having sex with a beautiful woman, or skydiving, or skiing down a 3000 meter mountain or anything else that adults do for excitement.

    The entertainments you call fitting for adults strike me as juvenile pursuits. I would never seek to make it illegal for you to pursue them, but please clearly understand, I will never accept your claim that these interests make you a more mature adult human being.

    Bringing about the birth of living worlds from previously dead worlds may be an impossible dream, as you claim, but the beauty of its potential is stirring enough to make it a worthy goal for a mature intelligent species.

    If we fail to achieve this goal on Mars, we can and should find other planets where it can succeed. If we also fail to do that, it will be because we allowed ourselves to be distracted by short term pleasures such as those you describe, or because we followed your siren call to pour all our resources into repeatedly failing "solutions" for perennial problems such as poverty or disease. By all means, let us continue trying to solve humanity's problems on this planet. But don't use that as an excuse to shut down all space exploration efforts.

    I care about humanity more deeply than you seem to be able to imagine. I care enough to want a future for humanity that extends beyond the lifespan of any single planet, beyond the lifespan of any single star system, and if possible, beyond the lifespan of any single galaxy. How is this any less mature than the desire of parents to hope their children and grandchildren might continue to prosper for many future generations?

    If we fail to secure such a future for our descendants, the end result might very well be a sterile, dead universe, where nobody else will ever again have the chance to enjoy sex, skydiving, skiing or anything else adults do for excitement.

    Bringing Mars to life may be so difficult it approaches the impossible. But it may be the best place to take the first step toward opening up the universe for humankind, and that makes it worth the effort.

  22. Re:send seeds by wooferhound · · Score: 5, Funny

    I don't lichen asparagus anyway . . .

    --
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  23. Funding Required For New Mars Mission! by Xelios · · Score: 4, Funny

    To Mars, Again!

    WASHINGTON -- NASA has submitted funding proposals for a new Mars mission, scheduled to launch in 2012. The mission will entail a new Mars lander called the Advanced Series Polymorphic Asparagus Research Automated Growing Unit Seedfarm, or ASPARAGUS, and is expected to grow several varieties of asparagus in martian soil.

    "[We] might be able to grow asparagus in it really well... It is very exciting for us" says Sam Kounaves, mission planner for the new endevour.

    The lander will be expected to gather soil and deposit it into a 'grow-op' like container, where asparagus seeds will be added to the mix. "We just don't know what will happen after that, it will be very exciting to watch the developments unfold over subsequent weeks." he adds.

    Included in the lander will be a CD filled with asparagus recipies for future astronauts of the first manned Mars mission, planned for 2050. "The CD will contain dozens of recipies all featuring asparagus as the main ingredient. Things like boiled asparagus, steamed asparagus, steam boiled asparagus, fried asparagus, and even just plain asparagus!" says Angela Schmidt, the mission's asparagus habilitation expert.

    The $480 million project is expected to be greenlit later this year.


    --
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  24. Re:The Soil, Maybe, But What About the Environment by mellestad · · Score: 5, Insightful

    I think the news here is that you would not have to bring native soil to Mars if you wanted to farm. Yea, you would have to farm under a dome but at least you don't have to transport a few tons of topsoil!