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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.'"

23 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 Anonymous Coward · · Score: 5, Funny

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

    3. 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.

    4. 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.
    5. 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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    6. 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.

  2. 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 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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    4. 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?

  3. 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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    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.
  4. 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!
  5. Asparagus on Mars by Anonymous Coward · · Score: 5, Funny

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

  6. 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.
  7. 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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  8. 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.

  9. 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.

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

    I don't lichen asparagus anyway . . .

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    We are Dead Stars looking back Up at the Sky
  11. 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!

  12. 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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