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Methane on Mars?

mbone writes "Two independent groups are claiming the detection of methane in the Martian atmosphere, one using the Mars Express orbiter, and the other using ground based telescopes. This detection, if confirmed, would be of great significance for the search of life on Mars, as Methane will not last long in the Martian atmosphere and thus must be renewed, presumably either by biological processes or by volcanic vents, which would be a good place for life to develop. The leader of the ground based astronomy team, Michael Mumma of the Goddard Space Flight Center, when asked if the methane was biological in origin, said 'I think it is, myself personally.'"

24 of 327 comments (clear)

  1. Existence by Justifiable_Delusion · · Score: 5, Insightful

    It is slowly coming closer. The day we actually find that source of life on another planet. It is beautiful and logical and perfectlly of sense to understand and grasp that we will some day find life, but the day we actually do discover it. That will be an amazing day simply for the achievement. Though anything we find on mars will be very simple (single celled things? bactiera? virii?) it will nonetheless be something.

    It is life.

    --
    Mad, adj : Affected with a high degree of intellectual independence. Ambrose Bierce - The Deveil's Dictionsary
    1. Re:Existence by IamGarageGuy+2 · · Score: 4, Insightful

      Don't get too excited just yet. Wouldn't want all the UFO nuts to get all jumpy from the discovery of methane. We still know very little about how or why it is there. This is fascinating stuff but the whole reason is not to just find life on another planet. There are tons of things to explore on mars and I think that if we get into this loop of only looking for life we may miss some other things that will be discovered.

      --
      Stay tuned for new sig...
    2. Re:Existence by BiggerIsBetter · · Score: 5, Insightful

      I'm getting the impression we're being slowly eased into the concept of life on Mars. I mean, how long did it take for them to even confirm it was once wet? And although we've sent several probes to Mars, we're detecting methane by telescope from Earth? Maybe my tinfoil fat needs adjusting, but something is wrong with this picture...

      --
      Forget thrust, drag, lift and weight. Airplanes fly because of money.
    3. Re:Existence by sbaker · · Score: 5, Insightful

      When (and I think it's a matter of 'when' - not 'if') we find simple life on Mars, the implications of it depend critically on which of four likely possibilities it is:

      1) Life originated only on Earth and travelled to Mars in an ejected rock. This would be just *boring*.

      2) Life originated on Mars and travelled to Earth in an ejected rock like the famous Mars meteorite. We are all Martians? Well, there's an interesting thought.

      3) Life originated somewhere else and travelled to both Mars and Earth by one of these mechanisms. Panspermia. Life would be very likely to exist throughout the galaxy in every niche you could imagine.

      4) Life originated quite differently and separately on Earth and Mars. Woahh! Now *that* is a deep thought.

      It seems likely to me that Scientists (being careful people) will start off with assumption (1). It would be hard to tell the difference between (1)/(2) and (3) without going off to mine some comets that have never been close enough to Earth or Mars to pick up a stray life-bearing meteorite. It would be hard to imagine any test that would distinguish between (1) and (2).

      So it'll come down to (1)/(2)/(3) versus (4). If it's (4), I'd expect us to be able to see that pretty easily - eg: Totally different fundamental mechanisms for just about everything.

      --
      www.sjbaker.org
  2. That's really big news by Lispy · · Score: 4, Insightful

    If this turns out to be what it seems to be it is a dream come true. I wonder how this might affect future missions. Hopefully they will start digging at last and not only look for indirect signs of life such as water.

    There were some experiments onboard the Viking landers that showed some odd results but weren't invested any further.

    The fact that the fine rovers are unable to detect life is a shame I think. They were designed to search for water only, I know. But they should at least have been equipped with minimal biological experiments too, just in case. I can't wait for a samplereturn mission...

    1. Re:That's really big news by Tablizer · · Score: 2, Insightful

      There were some experiments onboard the Viking landers that showed some odd results but weren't invested any further. The fact that the fine rovers are unable to detect life is a shame I think. They were designed to search for water only, I know. But they should at least have been equipped with minimal biological experiments too, just in case. I can't wait for a samplereturn mission...

      "Minimal" might not be good enough. They found out the hard way from Viking that it is often difficult to rule out natural chemistry. Such an experiment might suggest life, but it seems there is no single experiment which would give a Boolean result. Thus, if a probe is going to test for life, then it probably needs to perform many different kinds of tests, or risk a Viking-like limbo again.

      A few guys claim they have designed allegedly simple experiments that would give definitive answers, but others say that one needs to see microbe form and movement under a visual microscope, and chemical-based tests alone will always be suspect because scientists may not know all possible chemical reactions that can mimick life. Critics will always say, "just because you cannot think of a natural reaction that recreates these signs, does not mean that one does not exist". It is hard to get beyond this difficulty.

    2. Re:That's really big news by Lispy · · Score: 2, Insightful

      Sure, microscopic evidence would be king. But I think that a simple reproduction of the Viking results would still harden the theory. That would be a good start. We'll see what the future holds in stock with all those findings coming in I believe it will be hard to ignore such experiments on future missions.

  3. Re:What happens when life IS found by snarkh · · Score: 4, Insightful


    Why should there be religious ramifications to finding bacterial life on Mars?

  4. Re:What happens when life IS found by greygent · · Score: 4, Insightful

    I reckon they'll just update their religions as these discoveries are made. It's happened before: we developed planes that could fly above the clouds and see no heaven, and they moved heaven to space. We've explored space, and they've.... moved it elsewhere.

    Religion will still survive, perhaps unfortunately.

  5. Re:What happens when life IS found by tverbeek · · Score: 4, Insightful

    Comments like this just demonstrate how clueless many atheists are about others' beliefs. (I don't buy much of it either, but at least I know what I'm not buying.) Nowhere in the Torah, the Gospels and Epistles, the Quran, or any other holy scripture I'm aware of, does it say that there is no life outside this world. No contradiction means no problem. To most theists, the discovery of life on Mars would just be yet another example of the wonders of God's creation.

    --
    http://alternatives.rzero.com/
  6. Re:Life on Mars, yeah right! by Anonymous Coward · · Score: 2, Insightful

    Y'know, maybe the probability of life isn't that low. Sure, it gives us a warm fuzzy feeling that from all those billions and billions of star systems out there, only a handful of them have the perfect conditions to support life. As we look at more planets it may be revealed that life is pretty dogged and determined. Maybe it arises almost anywhere there's water and a bit of sun or lightning.

    Personally, I'm hoping that life is found on every hunk of rock we come across. It will destroy those notions that we are alone in the universe, and more importantly, remove the arrogance on humans towards the rest of the planet and maybe we'll treat it better.

    On the flip side, if we never find life then maybe it will still shock us enough that we take care of this little niche of ours.

  7. null by skot655 · · Score: 2, Insightful

    Enough with the fart jokes already :\ Are you lot 9 years old?

  8. Re:Can somebody explain something? by Angry+Toad · · Score: 3, Insightful


    I'm no geochemist, but it really seems to me like they're jumping the gun on this one. We *know* Mars had volcanic activity which can produce methane, and we don't know that there isn't any currently. We know **nothing** about life on Mars. Parsimony dictates that we presume geo(areo?)chemistry or volcanism until it can be clearly shown to be of another origin.

  9. Re:What happens when life IS found by snarkh · · Score: 2, Insightful
    What exactly do you mean by the creation myth - why should the creation happen only on Earth and not elsewhere as well? I think most religions do not insist on literal interpretations of their texts.

    On the other hand extraterrestial intelligence would be a much thornier problem (as far as Christianity is concerned, in any case) - did the aliens have the original sin and redenmption, etc.

  10. Re:when asked if the methane was biological in ori by Skjellifetti · · Score: 4, Insightful

    RTF whole quote:

    Asked whether the continual production of methane is strong evidence of a biological origin of the gas, Dr Mumma said: "I think it is, myself personally."

    He added: "It's difficult to imagine that primordial methane [from geological activity] would continue outgassing for four billion years [the age of Mars]. This looks very intriguing."


    Doesn't sound reckless to me. Sounds more like informed speculation.

  11. Re:What happens when life IS found by MrIrwin · · Score: 2, Insightful
    Ever read Descartes......Ergo et sum.

    Basiclly he hypothesis that god is the thing that is beyond that which we can comprehend around us.

    Therefore (My extrapolation of Decartes reasoning) until we can understand and control the creation of the universe there will always be room for "God".

    --

    And if you thought that was boring you obviously havn't read my Journal ;-)

  12. Why now? by synthrabbit · · Score: 2, Insightful

    If these new findings weren't found by the rovers, why has this just now been discovered? One of the sources of the discovery was from earth. Is it because mars has been so close to earth recently? No mention of this in the story.

  13. Re:What happens when life IS found by Anonymous Coward · · Score: 1, Insightful
    Because the Bible/Koran/etc doens't mention god creating life on other planets.

    These scriptures don't mention God creating the Azores either. Nobody seemed to freak out when some sailor landed there.

  14. More like public relations by Blethrow · · Score: 3, Insightful

    Public interest in Mars == greater support for NASA funding. The public doesn't care about rocks, they want to hear about life. So, to keep the public interested, NASA is now couching everything in terms of discovering life. You're not being 'eased into acceptance' of the idea of life there due to some slowly uncovering conspiracy, but rather because it's in their best interest for you to be excited about the idea of life there. It's PR spin, pure and simple.

  15. Re:the obligatory remark....a bit late by Anonymous Coward · · Score: 1, Insightful

    Your fuel cells will not work well with only methane...you will also need a source of oxygen.

  16. exponential growth by hak1du · · Score: 3, Insightful

    Exponential growth is a best-case situation. In a harsh environment, bacteria replicate very slowly.

    Whether they divide once every century or once ever 20 minutes, their growth is still exponential. Biological systems only stop growing exponentially once there is serious competition for resources or space.

  17. Re:What happens when life IS found by hak1du · · Score: 3, Insightful

    I will love to see the ramifications to the worlds religions when life is actually found. The fall-out will be grand. With some luck it will put into proper perspective all the in-fighting that has been caused by 'holy wars' over the centuries.

    If the discovery of a universe that is about a dozen billion light years large and a dozen billion years old, of 60ft cold-blooded monsters with banana-sized teeth, of nuclear fusion, of evolution, and of all that didn't change religion, the discovery of bacterial life on Mars won't either. In fact, most people will probably neither know or care about it.

  18. Re:What happens when life IS found by droleary · · Score: 2, Insightful

    I think most religions do not insist on literal interpretations of their texts.

    Worse, they tend to insist on interpretations by an approved "authority" within the religion. In short, they then make up shit like "the Earth is the center of the Universe" or "homosexuality is an abomination before God" or "aliens are Godless animals". Then someone comes along who isn't talking shit ("Earth Orbits Sun, says Galileo; "Your Own Priests Fucked Me" boys say) an instead of admitting a mistake of Godly proportions, the authorities covers things up and insists on a holy war to destroy the non-believers.

  19. What would be so unusual about life on Mars? by aauu · · Score: 3, Insightful

    We have found a number of meteorites that are of martian origin. There should be a similar number of Earth origin meteorites on Mars. Mars had surface water at various times. Earth life has most likely already been planted. I would not be suprised if any place in the solar system that has liquid water already has forms of life derived from Earth. Show me life on another star system.

    --
    When I was young, I had to rub sticks together to compute.