Stories
Slash Boxes
Comments
Search

News for nerds, stuff that matters

Slashdot Log In

Log In

Create Account  |  Retrieve Password

Molecular Basis for Life Found on Extrasolar Planet

Posted by Zonk on Thu Mar 20, 2008 12:24 PM
from the i-wonder-if-they-get-the-internet-in-space dept.
Space NASA Science
DarkProphet writes "NASA scientists have discovered the first evidence of organic molecules on an extrasolar planet. Using the Hubble Space Telescope, they detected trace amounts of methane on a swirling gas giant about 63 light-years from our own planet. Being a gas giant, there's almost no chance this discovery represents extrasolar life. A unique find, just the same. 'HD 189733b, a so-called "hot Jupiter," located 63 light years away, has proven a boon for scientists studying exoplanets. Its large size and proximity to its star mean that it dims the star's light more than any other known exoplanet. Combine that with its home star's high brightness, and scientists find that the system creates the best viewing conditions of any known extrasolar system. At different wavelengths, every atom and molecule has its own telltale footprint, so scientists can convert what are known as absorption spectra into the chemical composition of the object they're looking at.'"
+ -
story

Related Stories

Submission: Molecular Basis of Life Found on Extrasolar Planet by DarkProphet (114727)
This discussion has been archived. No new comments can be posted.
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.

Molecular Basis for Life Found on Extrasolar Planet 50 Comments More /

 Full
 Abbreviated
 Hidden
More
Loading... please wait.

  • I'm not surprised... (Score:3, Insightful)

    by PC and Sony Fanboy (1248258) on Thursday March 20 2008, @12:31PM (#22808648) Journal
    Someone was bound to find something eventually. If the universe is as big as we seem to think it is, it was bound to happen eventually. Who knows, maybe some of those religious guys might be right. Too bad it would simply be accidental ;)

  • Well... (Score:3, Funny)

    by ch-chuck (9622) on Thursday March 20 2008, @12:34PM (#22808686) Homepage
    just beam a high power radio signal that way and if your lucky in 124 years you might get a 'hello there' back.

    Actually it would be pretty cool to establish contact with an alien civilization even if there is a 250 year lag. Just ask a question and your great-great-great-grandchildren might get an answer, "No we haven't developed hyperlightspeed propulsion yet either".

    • or we can just use the stargate and go there.

      • Re:Well... (Score:5, Funny)

        by AHumbleOpinion (546848) on Thursday March 20 2008, @01:55PM (#22809900) Homepage
        Well, we know you don't work in software. A software developer would have said "Hello world"

        Well, we know you don't use email. An email user would not expect the first communication to be "Hello there" or "Hello world", an email user would expect:

        Lagos, Nigeria, Earth.

        Attention: The President/CEO

        Dear Sir,

        CONFIDENTIAL BUSINESS PROPOSAL

        Having consulted with my colleagues and based on the information gathered from the nigerian chambers of commerce and industry, I have the privilege to request for your assistance to transfer the sum of ...
  • I've heard many times of the extraordinary odds against life even existing in the universe. Yet, here we are and some still try to prove that it's impossible for themselves to exist. It's unfortunate that life is likely so prevalent in the universe but really really difficult to bridge the gap and make contact, even at the speed of light.
     
    • It is extraordinary odd that any life exists, fortunately there is lots of time and space.
      • Regarding your sig, isn't every species essentially a different evolutionary tract in a varying stage? If not, what would qualify for your criteria of being different? Silicon-based lifeforms?
         
          • That ones easy, "life" (ie collections of reproducing molecules) developed once somehow and then out competed all later/other types of life for resources. I mean some little molecule thats something near alive can form in this room right now but its not gunna get enough "food" because me and my bacteria friends are going to be far better at getting, keeping, and utilizing those resources. Thats the nontechnical answer.
              • No of course I don't have proof, I have a reasonable explanation for what we observe around us (life seems to have originated from one original alive thing). The event you're proposing may very well happen (or could have happened already but noone noticed), but I don't think it would be very likely due to reasons stated above. And bacteria surviving is a completely different thing, they are far more complex and efficient than anything thats going to form spontaneously, even the new life forms ancestors 1 mi

  • just to highlight (Score:5, Informative)

    by ionix5891 (1228718) on Thursday March 20 2008, @12:36PM (#22808730)
    they found methane which is quite common in our solar system, its not that they found methane being present thats is the breakthrough here, its the fact that they have fine enough instruments to measure a planet ~60 light years away, this absolutely amazing! fairplay!!

    the planet in question is bigger than Jupiter and closer to its sun than mercury, so its way too hot for any life "as we know it" to survive

  • Been over this before (Score:5, Funny)

    by explosivejared (1186049) <hagan@jared.gmail@com> on Thursday March 20 2008, @12:36PM (#22808736)
    We just went over [slashdot.org] this exact occurrence just a month ago. Go ahead with the flatulence jokes all the same though, it would be a break of tradition if you didn't.

    • We just went over this exact occurrence just a month ago. Go ahead with the flatulence jokes all the same though, it would be a break of tradition if you didn't.


      Meh, no jokes from me. Your comment has left my humor deflated.

  • Headline is misleading (Score:5, Informative)

    by hcg50a (690062) on Thursday March 20 2008, @12:37PM (#22808744) Journal
    The big deal, according to the article, is that they were able to detect it for the first time, not that it was discovered. It is expected to be present.

    Here's a quote from one of the workers:

    If we were able to detect [methane] on a more hospitable planet in the future, it would really be something exciting.

    • Re: (Score:3, Interesting)

      by esocid (946821)
      The big deal with it is that they now have a proven method for using spectrum analysis to determine the presence of organic molecules. From the actual research paper:

      As these bands can overlap in wavelength, and the corresponding signatures from them are weak, decisive identification requires precision infrared spectroscopy. Here we report a near-infrared transmission spectrum of the planet HD 189733b that shows the presence of methane.

      Here is the abstract [nature.com].

    • It looks like somebody read TFA. Turn your card in at the door.

  • Same old hype (Score:3, Interesting)

    by l2718 (514756) on Thursday March 20 2008, @12:40PM (#22808772)
    The ability to resolve the spectral lines is a great advance. The hype is getting old. We know that small "organic" molecules are not hard to come by; we expect to find them everywhere we look, yet the press goes ape whenever we find them. Worse, since we have no idea what "life" is, it seems a bit odd to go crazy over molecules that are somewhat related to our kind of "life".
    • Agreed, same old hype. Save it for when you can actually announce that "we discovered an alien being on a distant planet".

      Of course, the wack-jobs believe this already happened, and the government is keeping it a secret. That's for another day...

  • Now, oxygen, on the other hand... (Score:5, Interesting)

    by Loke the Dog (1054294) on Thursday March 20 2008, @12:42PM (#22808808)
    Well, it's cool that we can find proof of any kind of molecules on extrasolar planets, but I'm still waiting for the discovery of O2 on an extra solar planet, that will be the discovery of the century. Methane is not so cool.
    • Agreed. If we found a planet that had an abundance of O2, and was even close to our temperature and light levels, I would be suprised if there wasn't life. And if there wasn't life, it would be trivial to transplant it there.
      • Ok, it would still be hard to physically get there, but what we got there would likely grow.

      • Re:Now, oxygen, on the other hand... (Score:5, Interesting)

        by mog007 (677810) <Mog007@NoSpAM.gmail.com> on Thursday March 20 2008, @01:30PM (#22809486)
        The first lifeforms on our own planet didn't use O2 for respiration. It took a very, very, very long time for the Earth's original atmosphere to be converted to the 70% nitrogen, 20% oxygen atmosphere we're comfortable breathing now. Even today we have a very popular organism that doesn't require O2 to function, and the wonderful result of lacking O2 is ethanol.

        Liquid water is the smoking gun for life forms, and maybe some serious carbon.

        • Re:Now, oxygen, on the other hand... (Score:4, Informative)

          by wizardforce (1005805) on Thursday March 20 2008, @01:50PM (#22809812) Journal
          photosynthesis produces oxygen as a waste product. when oxygen levels in the air became sufficient, it resulted in what is called the oxygen catastrophe because oxygen is quite poisonous to many anaerobic organisms. finding oxygen in the presence of reducing chemicals like methane signals that there is an active process for making oxygen and reducing chemicals and one of the best ways to do this is with active life.
          • That sounds reasonable, but the post I was referring to didn't seem to imply that methane would have been as big a deal as molecular oxygen, and I would disagree that molecular oxygen would be completely meaningless by itself. I'd be more interested in liquid water than either oxygen or the so called "organic molecules".
        • Congratulations. You read some articles. For a second, I thought you had invented a Time Machine and discovered this amazing fact on your own. Instead, you seem to be expelling hot methane rather than being an authority on early Earth history.

          How does this stuff get modded up in the first place?
          • Yes, I do mean billions of years. About four billion. And I wasn't aware of any such studies on coal seams that would be developed in days or months, instead of centuries or millenia. To be fair, I don't really follow geology, but the amount that I am familiar with, tectonic plates, and continental drift. From all the evidence I've read about, Pangaea is about a quarter of a billion years old, and gave way to the continents we're familiar with today, but as I stated, Geology isn't a big priority in my re

  • Dup (Score:1, Redundant)

    by Bob-taro (996889)
    This is a duplicate [slashdot.org] from over a month ago.
  • I bet the Slylandro beg to differ.
    • Oh no, not the probes! There is nothing more unreasonable than a Slylandro probe.

    • Re: (Score:3, Informative)

      by v1 (525388)
      Being a gas giant, there's almost no chance this discovery represents extrasolar life

      considering how regularly we find life in places our usual view of where life can survive don't work, like around geothermal vents at the bottom of the ocean, or inside solid rock 2 miles below the surface, I find this comment incredibly narrow-minded. That gas giant is about on keel with the ocean here on earth, and last I checked, life here began in the seas.
      • [Being a gas giant, there's almost no chance this discovery represents extrasolar life] Considering how regularly we find life in places our usual view of where life can survive don't work, like around geothermal vents

        Note that some of Jupiter's chemicals may be biology-produced. We just don't know at this stage. If bacteria can live in Earth's atmosphere, then it can probably live in Jupiter's. There are a variety of temperatures in Jupiter's atmosphere; the further you go down, the warmer it gets. This
        • well again though, even limiting yourself to water, although water IS a nice, biologically-friendly element, having a neutral PH as it does, it's certainly not required. Then we just get back to the idea of trying to increase our odds of finding something by looking for a place that is more likely.

          I suppose what I'm saying comes down to just this: to say that any location is inhospitable to life, is a mistake which the dice will eventually beat you at. Just to have genesis from nothing at all to begin wit
  • There is nothing unusual about methane being detected in the atmosphere of a gas giant, what is unusual is the fact that carbon monoxide is supposed to be more abundant than methane at this temperature. Of course we knew about this over a month ago... btw, methane without water or ammonia or any number of other chemicals required for abiogenesis is utterly unremarkable, they make it sounds like they found DNA in the atmosphere or something equally amazing... sheesh

  • "We found methane gas..." => "Molecular basis for life..."?

    Political double-speak is the cause of the polarization problem in communicating science, not the solution.

    How about just sticking with "We can detect methane gas on an extra-solar planet"? Isn't that cool enough by itself? Nobody on either side of the debate has problems with repeatable observations. But instead, every discovery is used as a club to beat the Big Bang or Evolution over the head of creationists, whether it has anything to d

    • ohes noes, teh poor lil creationists, they are the victims of the evil scientists. WTF? This has absolutely nothing to do with evolution/creation, if you think it is some covert attack on creationists, you are either paranoid or more likely just looking for yet another excuse to paint yourself as a victim.

      The motivation is simple sensationalism, molecules of life sounds cooler than methane, thats it.


      Now go home and well call you when some redneck school board bans evolution teaching, then you can
    • There is lots of evidence, just look around you.

      Clearly life in the universe exists, Us. There is no reason, religious or otherwise that life can't exist elsewhere. Only closed minded fools.

      Why that site is crap.

      Here is one example:
      "The story we have all heard from movies, television, newspapers, and most magazines and textbooks is that dinosaurs lived millions of years ago. According to evolutionists, the dinosaurs 'ruled the Earth' for 140 million years, dying out about 65 million years ago. However, scie
  • Can someone explain to me why this might not be simply the spectra of methane occurring anywhere in interstellar space between the star emitting the light and the measuring device. Do these guys *only* see the methane spectra when the planet transits it's star. Do we never see methane if we look in any other direction ?

  • At different wavelengths, every atom and molecule has its own telltale footprint...
    You mean, atom and molecule and yeti?
    They should adjust their filters to look for those telltale footprints, too.

    • Re: (Score:3, Interesting)

      by timster (32400)
      Seriously though, I'd like to know exactly what makes life on gas giants so unlikely. You've got all sorts of chemicals swirling around, different temperatures at different depths, and frequent capture of diverse debris. We've hardly explored the interiors of the gas giants right here in our own system, so what's the basis for ruling out life on gas giants 60 ly away?

      I'm sure there's good science involved, I'm just curious to know what it is.

      • Re:Hydrogues (Score:5, Informative)

        by wizardforce (1005805) on Thursday March 20 2008, @01:32PM (#22809528) Journal

        so what's the basis for ruling out life on gas giants 60 ly away?
        the fact that it is 1300 degrees, so hot that water starts reacting with methane to produce carbon monoxide.

        • so what's the basis for ruling out life on gas giants 60 ly away?
          the fact that it is 1300 degrees, so hot that water starts reacting with methane to produce carbon monoxide.
          Sounds like Los Angeles.

        • Re: (Score:2, Informative)

          by freefrag (728150)
          More relevant here is the fact that the upper limit of stability of any carbon-based macromolecule or polymer is about 400 Celsius, even in "inert" atmospheres due to C-H bonds breaking. Though this does not rule out other chemistries, the news here is about carbon-based life.
          • carbon monoxide isn't the problem, the fact it is hot enough to react methane and water to make carbon monoxide and hydrogen *is*. it is hot enough to melt aluminum and rend any organic compounds with water into various gases, hot enough to destroy any polymer likely to exist in lifeforms.

All trademarks and copyrights on this page are owned by their respective owners. Comments are owned by the Poster. The Rest © 1997-2009 Geeknet, Inc.