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Astronomers Probe Mysterious Gas In Titan's Atmosphere

sciencehabit writes "A fluorescent glow high in the atmosphere of Titan, Saturn's largest moon, signifies the presence of a gas that astronomers have yet to identify. The glow appears only on the daytime side of the moon at altitudes between 600 and 1250 kilometers, with the largest intensity occurring at an altitude of about 950 km. Detailed analyses reveal that the glow doesn't stem from a problem with the Saturn-orbiting Cassini craft, and it isn't associated with methane or any of the other hydrocarbons already identified as constituents of Titan's atmosphere."

57 of 104 comments (clear)

  1. Where did I hear that before? by GrpA · · Score: 1

    I guess the chances of anything coming from Titan, are a million to one...

    --
    Enjoy science fiction? "Turing Evolved" - AI, Mecha, Androids and rail-gun battles. What more could you want?
    1. Re:Where did I hear that before? by MichaelSmith · · Score: 1

      Its the Puppet Masters.

    2. Re:Where did I hear that before? by Genda · · Score: 1

      You forgot the eerie OoooOOOOooooOOOoooo LLLaaaaaaaaaaa!

  2. Re:Titanurrito by Anonymous Coward · · Score: 2, Insightful

    Oh ho ho! A fart joke! Never would I have seen that one coming! Can you do a uranus joke next! Those are so fucking funny! And nobody has ever done them before ever!

  3. No spectrograph? by Un+pobre+guey · · Score: 4, Interesting

    They don't have an emission spectrum that can be analyzed?

    1. Re:No spectrograph? by GloomE · · Score: 5, Informative

      RTFA.
      Of course it does. That's how they know it's there. They're just not sure what is making it... maybe aromatics.

    2. Re:No spectrograph? by Anonymous Coward · · Score: 5, Informative

      According to TFA, it does, but the spectrum is very near to methane, which is making it hard to identify this other gas.

    3. Re:No spectrograph? by FatLittleMonkey · · Score: 2

      Methane Lite.

      The spectrum you love, with half the calories.

      --
      Science is all about firing a drunk pig out of a cannon just to see what happens.
    4. Re:No spectrograph? by crutchy · · Score: 1

      its gas... it must be the holy shit

    5. Re:No spectrograph? by crutchy · · Score: 1

      i can't help it if 2/3 of the population is stupid

    6. Re:No spectrograph? by chakan2 · · Score: 1

      Methane Lite.

      The spectrum you love, with half the calories.

      Gadolinium 64...

    7. Re:No spectrograph? by ChrisMaple · · Score: 1

      So you're saying there's an abundance of carbon-11 (half-life 20 minutes) in the atmosphere of Titan?

      --
      Contribute to civilization: ari.aynrand.org/donate
  4. Good job by Daetrin · · Score: 4, Insightful

    An article about astronomical observations of a gas and so far we've already got three fart jokes and one random insult. I see Slashdot is living up to form.

    (And what did Phil Plait ever do to you AC? Or do you have an irrational grudge against any scientists who actually tries to educate laypeople?)

    --
    This Space Intentionally Left Blank
    1. Re:Good job by fabioalcor · · Score: 1

      so far we've already got three fart jokes and one random insult

      Welcome to human race.

    2. Re:Good job by Black+Parrot · · Score: 1

      Phil Plait makes really stupid arguments when trying to disprove something he doesn't believe in.

      If you develop a grudge against everyone who says something stupid on the internet, you must live a pathetic life.

      A sane person would just quit reading his blog, if he thought it was stupid. Or make jokes about it.

      But a grudge?

      --
      Sheesh, evil *and* a jerk. -- Jade
    3. Re:Good job by gargleblast · · Score: 1

      Speaking of really stupid things to do ... you are attacking a straw man. The real Phil Plait has debunked astrology, alignment and concordance many times, and in so doing has never once mentioned the speed of light. He don't need to: he simply points out the impossibility of any mechanism, and the absence of any effect.

    4. Re:Good job by gargleblast · · Score: 2

      I actually do real public scientific outreach myself ...

      Ooh, tell me more. I'm guessing big tobacco, fossil fuel / nuclear, anything involving LD50 tests ...

    5. Re:Good job by pitchpipe · · Score: 1, Funny

      ... what did Plait ever do to you AC?

      Phucking Phil Phucktard is an [blah blah blah] ... But funny you went fishing for "an irrational grudge against any scientist." [blah blah blah] Phucking Phil Plait can't. [blah blah blah] Phucking Phil Phucktard [blah blah blah] Phucking Phil's [blah] Phucking Phil's [spew] Phucking Phil Phucktard [vomit] phucking phucktard's ass.

      Phil fucked his mom.

      --
      Look where all this talking got us, baby.
    6. Re:Good job by gargleblast · · Score: 1

      ... creation science, Japanese whale research, postmodern sociology ...

    7. Re: Good job by minogully · · Score: 1

      When the number of jokes surpasses the number of non-joke posts, that's when you know it's a really good article.

    8. Re:Good job by stenvar · · Score: 1

      I don't see a "grudge" in his statements; he is just pointing out that (in his view) Plait's blog has problems, and that's a useful thing for other readers to keep in mind.

    9. Re:Good job by DFurno2003 · · Score: 1

      and what did you bring to the conversation? about as much as me.

    10. Re:Good job by gargleblast · · Score: 1

      ... geocentricism, steady state theory, ufology ...

      but wait! here's a blast from the past: "dirty linux loving phaggots"

      ... Microsoft Research ...

  5. Re:Titanurrito by K.+S.+Kyosuke · · Score: 1

    I have an idea where that gas came from. Probably that Titanurrito I had for lunch.

    Well, perhaps they're just celebrating Saturnalia. Given the venue, it would make sense. Who knows what calendar they're using, anyway?

    --
    Ezekiel 23:20
  6. Re:Titanurrito by xevioso · · Score: 1

    So...ura..nostologist? You study senility?

  7. Polycyclic aromatic hydrocarbon by Latinhypercube · · Score: 5, Interesting

    http://en.wikipedia.org/wiki/Polycyclic_aromatic_hydrocarbon
    Origins of life PAH world hypothesis ...PAHs, subjected to interstellar medium (ISM) conditions, are transformed, through hydrogenation, oxygenation and hydroxylation, to more complex organics - "a step along the path toward amino acids and nucleotides, the raw materials of proteins and DNA, respectively".

  8. Could be serioius by Waffle+Iron · · Score: 5, Funny

    So we have a planetoid enveloped in a vaporous cloud of mysterious matter, which is unknown to science.

    Well, I've seen enough old Star Trek episodes to know that it's almost certainly a malevolent disembodied life form, which was left imprisoned on that desolate moon eons ago to keep it from threatening other civilizations throughout the galaxy.

    Unfortunately, the Huygens probe has probably now provided it with the tools it needs to transport itself off the moon, most likely in a bid to attack and take over our planet Earth. Since it's probably invulnerable to any technology we posess, our only hope is to cleverly lure it into some kind of trap where it will destroy itself, most likely in a large explosion.

    1. Re:Could be serioius by evanism · · Score: 1

      They clearly forgot to add the "malevolent disembodied life form" detection dooverlacky on this probe.

      NASA cant get *anything* right!

      --
      Just bought a new quantum computer, but I'm uncertain how it works.
  9. Re:Is it sentient? by Un+pobre+guey · · Score: 4, Informative

    we've found silicon based flora in our own deep oceans

    Citation needed. There are no silicon-based life forms known to man.

  10. Re:Is it sentient? by rubycodez · · Score: 4, Funny

    you are wrong, there are plenty of silicon-polymer (silicone) based giant nippled life forms; they always attach to their hosts in pairs

  11. Obligatory by M0j0_j0j0 · · Score: 5, Funny

    Pumbaa: Hey, Timon, ever wonder what those sparkly dots are up there?
    Timon: Pumbaa, I don't wonder; I know.
    Pumbaa: Oh. What are they?
    Timon: They're fireflies. Fireflies that, uh... got stuck up on that big bluish-black thing.
    Pumbaa: Oh, gee. I always thought they were balls of gas burning billions of miles away.
    Timon: Pumbaa, with you, everything's gas.

  12. Re:Its a very convenient gas by ThePeices · · Score: 1, Flamebait

    It sounds like a ploy to keep the funds flowing for Cassini.

    +5 insightful for this obvious troll post?

    Slashdot: +5 Disgraceful

  13. Re:Its a very convenient gas by Anonymous Coward · · Score: 1

    It sounds like a ploy to keep the funds flowing for Cassini.

    Yeah. What assholes, finding something new that they haven't identified....

  14. Re:Is it sentient? by MichaelSmith · · Score: 1

    My back yard is full of the stuff, it just very slow moving.

  15. Re:Has anyone considered... by Anonymous Coward · · Score: 4, Funny

    Look I think that's a great theory except for one tiny problem, Titan is in orbit around Saturn.....

  16. Re:Titanurrito by sjames · · Score: 1

    Naturally, that's where burrito gas comes from.

  17. Neon Gas in Neon Signs = ... Yellow by BoRegardless · · Score: 1

    Maybe?

  18. Titan blamed it on the dog by hateflyy · · Score: 1

    I mean, who doesn't?

  19. Re:Its a very convenient gas by Black+Parrot · · Score: 2, Funny

    It sounds like a ploy to keep the funds flowing for Cassini.

    +5 insightful for this obvious troll post?

    Slashdot: +5 Disgraceful

    Our conspiracy theories are becoming as unsophisticated as our fart jokes. Back in the day, people made up interesting CTs, but nowadays it's always "they want more funding".

    Let's here some *good* conspiracy theories for this, then maybe we can have a poll to see which one is best.

    --
    Sheesh, evil *and* a jerk. -- Jade
  20. Re:Has anyone considered... by Nefarious+Wheel · · Score: 1

    Ammonia bird, in a gilded cage.

    --
    Do not mock my vision of impractical footwear
  21. Re:Its a very convenient gas by thrich81 · · Score: 5, Insightful

    Considering that Cassini is a WORKING orbiter around Saturn, a thing we are unlikely to see again in most of our lifetimes, I'm good with them funding the use of it as long as it keeps running, for no other reason than to keep looking for things it missed the first (or hundredth) time around. Same for any other working interplanetary spacecraft. If (and only if) someone can make the case that defunding Cassini will directly free up funding for the next probe to Saturn, then maybe, but I don't believe that will happen.

  22. fluorescent organic molecules? by wierd_w · · Score: 5, Informative

    *groan over the uranus, fartgas, and other dumb jokes.*

    Anyway, since this is occuring over the sunlit side of the moon, and that the moon is very far away from the sun, and that solar wind particle action on the moon's atmosphere would be shockingly small, (Saturn's magnetic field would push a good deal away, and even then the distance means a radically lower conentration than we are used to dealing with, meaning solar ions are unlikely as a cause.) Is it possible that there are tiny organic molecules up there with a fluorescent property?

    Titan has lots of methane, nitrogen, and ambient radiation from Saturn. Tiny particles just a few molecules in size suspended in the upper atmosphere would be all that's needed. Essentially, glow in the dark organic dust?

    It would be interesting to see if there are other re-emission falloff zones in that part of the atmosphere relating to the e-ring charge emissions from Saturn, and other nearby energy sources that could excite a light emitting molecule.

    1. Re:fluorescent organic molecules? by reverseengineer · · Score: 3, Informative

      That seems likely- data from other instruments on Cassini has suggested that aromatic hydrocarbons such as benzene and anthracene form high in Titan's atmosphere. The altitude (~1000km) is consistent with the location of the glow, and the emission line fits- a mix of polycyclic aromatic hydrocarbons has long been thought to be the source of a 3.3 micron emission line seen in interstellar dust.

      --
      "FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
  23. Re:Its a very convenient gas by MichaelSmith · · Score: 2

    The Apollo ALSEP experiments were defunded and shut down. It seems stupid but it does happen.

  24. Re:Has anyone considered... by CrimsonAvenger · · Score: 1

    That IO has left a huge toroid of highly charged sulfur atoms running around Jupiter and that perhaps Titan's atmosphere is just banging into that cloud and what we're witnessing is sulfur ionizing at high altitude?

    Might not be unreasonable if Titan orbited Jupiter.

    Alas, Titan is orbiting Saturn, and is a bit far away for what you're describing....

    --

    "I do not agree with what you say, but I will defend to the death your right to say it"
  25. Re:Has anyone considered... by Genda · · Score: 1

    DAMN! So close... and yet so far :-(

  26. Re:Has anyone considered... by Genda · · Score: 1

    Yeah, except the same process is happening with Saturn, excepts its water molecule erupting from huge geysers on Enceladus. Of course Saturn has a dramatically weaker magnetic field than Jupiter (if you could see the magnetic field of Jupiter it would be several times larger than the Moon and the largest thing in the night sky.) So you wouldn't be getting the kind of energies that Jupiter hefts, but Saturn in no slouch. That and the back lit pictures of Saturn show extensive invisoble ring structure dramatically further from the planet than we previously imagined. So, same argument, different ionic species, in fact they should be looking for either molecular water or oxygen in the glow, not things they would normally be looking for.

  27. Obviously, by Ralph+Spoilsport · · Score: 1

    It's GAS MUSIC from JUPITER!!!

    --
    Shoes for Industry. Shoes for the Dead.
  28. Re:Is it sentient? by JMJimmy · · Score: 1

    No, he confused silicon with sulfur. Can't find a good article but here's an example:

    http://www.coml.org/discoveries/discoveries/new_species/sulphurbacteria.htm

  29. I can't believe... by Zontar+The+Mindless · · Score: 1

    I'm the only Slashdotter who's read John Varley?

    --
    Il n'y a pas de Planet B.
  30. Re:Has anyone considered... by flayzernax · · Score: 1

    Your overcomplicated this. Now pay attention while I hold this shiny thing in front of you and give you a short speech.

    *sunglasses

    Swampgas+Venus+Light Reflected

  31. nasa is like the tsa by crutchy · · Score: 1

    ... they both get excited about a probe to uranus

  32. Re:Has anyone considered... by Genda · · Score: 1

    Alex, I'll take Bluebook for 500...

  33. Re:Good job! by TapeCutter · · Score: 1

    A lot of anger there? - Are you the guy who started the moon hoax meme or just another garden variety conspiracy theorist?

    --
    And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
  34. Re:Its a very convenient gas by tetrahedrassface · · Score: 1

    Happen to agree with the original post. NASA funding will be cut 21% due to the sequester. His opinions is not a troll and while neat for an 'oh gee' bit off science.....This is not that big a deal For the guy that attacked him (ThePieces), just because you think there is plenty of $ to around does not mean there are........ you need to learn critical thinking and just why the mission wants the attention......

    -1 troll disgraceful.

  35. Re:Its a very convenient gas by thrich81 · · Score: 1

    Yeah, I never could understand that one (ALSEP shutdown). By the way, I think it was unjustified for your original post to get modded down like it did (troll and flamebait -- I never got those:)). It sounded a bit trolly on first read but was a worthy speculation.

  36. Re:Its a very convenient gas by cusco · · Score: 1

    The previous (M)Administration attempted to eliminate funding for monitoring the Voyagers, ordered Mariner data destroyed, and got upset when NASA middle managers handed over Pioneer data to the Planetary Society for analysis rather than destroy it as they ordered. I don't understand the mindset of politicians who are not content with simply removing funding for a project, but can't stand the very idea that someone else might be able to take the project over. All the plans from the Apollo missions for the Saturn 5, the rovers and spacecraft were destroyed under orders from DC (IIRC during the Reagan years) so that no one else would ever be able to build on that work. I just don't get it.

    --
    "Think about how stupid the average person is. Now, realise that half of them are dumber than that." - George Carlin