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Cassini 'Tastes' Organic Material at Enceladus

Riding with Robots writes "As previously reported, the robotic spacecraft Cassini recently flew through the mysterious geyser plumes at Saturn's icy moon Enceladus. Today, NASA released the preliminary results of the flyby, including some intriguing findings, such as organic materials 20 times denser than expected and relatively high temperatures along the fissures where the geysers emanate. 'These spectacular new data will really help us understand what powers the geysers. The surprisingly high temperatures make it more likely that there's liquid water not far below the surface,' said one mission scientist."

11 of 70 comments (clear)

  1. Re:Organic? by Chris+Burke · · Score: 4, Informative

    Does someone want to tell me what definition of "organic" they are using, which can be found in comets and moon geysers?

    "Compounds containing carbon".

    That's all it means, really. Methane is a common one.

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  2. suspicions confirmed by spacefiddle · · Score: 5, Funny

    > "Enceladus' brew is like carbonated water with an essence of natural gas," said Waite.

    Gawd, i knew it. The primordial hell-brew of the universe is Mountain Dew.

  3. Re:Organic? by wizardforce · · Score: 3, Interesting

    traditionally organic meant that it was produced by life and not synthetic- then we figured out how to synthesize a lot of these chemicals and now it pretty much means contains carbon and usually hydrogen. carbon dioxide for example contains carbon but isn't considered organic and neither is pure carbon. water is a vital component of life as we know it and is almost always associated with organic compounds at least in vivo although it too is not considered organic because it doesn't contain carbon, it does however contain hydrogen and oxygen which are very common in organic compounds.

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  4. Re:Organic? by Anonymous Coward · · Score: 3, Informative

    or to be more precise by citing wikipedia:

    Organic chemistry is a specific discipline within chemistry which involves the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of chemical compounds consisting primarily of carbon and hydrogen, which may contain any number of other elements, including nitrogen, oxygen, the halogens as well as phosphorus, silicon and sulfur.

  5. Re:Organic? by wizardforce · · Score: 3, Informative

    it should be noted however that otherwise "organic" compounds containing boron or silicon are often not characterized as being organic, usually they are referred to as being part of organometallic chemistry. th is even though boron and silicon are not strictly metallic, they are in fact semiconductors.

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    Sigs are too short to say anything truly profound so read the above post instead.
  6. What interests me... by jd · · Score: 4, Interesting
    ...is that Enceladus has a chemical makeup far and away closer to a comet than to a Saturnian body, but cannot be a captured comet. The speculation I've read suggests it may have been bombarded by so many comets that the overall chemistry may have changed, but we've a name for objects like that -- dust. Being smashed into by objects that must have been many times the mass of the original moon, for there to have been a significant effect, would have reduced the proto-Enceladus into puree-of-moon.

    I'm wondering if that, in fact, happened - that there was one almighty pulverization and the modern Enceladus is the result of the lighter material condensing around a surviving fragment of sufficient size to act as a nucleus. In that case, though, there should be another moon formed from the heavier material condensing around another fragment, showing an abnormally high density, in much the same way that the Earth and its moon unevenly divide the material of the original planet.

    So far, I've not seen anything that suggests that is the case, but since so little is actually known, I guess it's well within the realms of possible at this point.

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    1. Re:What interests me... by MichaelSmith · · Score: 3, Informative

      far and away closer to a comet than to a Saturnian body, but cannot be a captured comet. Why not?

      It is too close to Saturn and in too stable an orbit.

  7. Lets play god by WarJolt · · Score: 4, Interesting

    Organic material, eh... We should seed the planet with microbes, come back in a million years and see what evolves there. Would that prove evolution or the god theory?

  8. Re:Organic? by ross.w · · Score: 3, Funny

    ...but they don't contain real girl scouts

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  9. Re:Wasn't it a bust? by Tablizer · · Score: 3, Informative

    I thought the "tasting" was a bust...

    Only one instrument had problems. The others worked.

  10. Re:nasa should wisen up by lusiphur69 · · Score: 4, Funny

    In other news, the oil industry announced a 100-billion dollar research grant into carbon nanotubes.

    Oli G. Archy, head of Chevron says "We believe a giant straw-like tube would significantly advance our knowledge of the known universe and help our neighbours in the solar system acheive democracy."