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Lake spotted on Titan?

jahead writes "It looks like a lake has been seen on Saturn's moon Titan by the Cassini probe. But don't get too excited yet. As mentioned by Elizabeth Turtle in the article, it could also be a dried up lake that left dark deposits."

197 comments

  1. Act now!!! by 1967mustangman · · Score: 5, Funny

    And now, for a limited time only, I can sell you lake front property on said lake on Titan for the astonishingly low price of $20 an acre!!!

    --
    Madre de Dios! Es El Pollo Diablo! -- Captain Blondebeard
    1. Re:Act now!!! by Zordak · · Score: 1

      Be sure that the sales contract contains indemnification language against any possible injuries. There may be some potential hazards in a boating excursion on a lake full of methane.

      --

      Today's Sesame Street was brought to you by the number e.
    2. Re:Act now!!! by farker+haiku · · Score: 2, Funny

      You think that's something? I own the bridge that crosses the lake. I'll sell it for the reasonable price of $5,000.

      --
      Your sig(k) has been stolen. There is a puff of smoke!
    3. Re:Act now!!! by yatt · · Score: 1

      probably have buoyancy issues

  2. What would be the significance of this? by bc90021 · · Score: 5, Insightful

    I'm not trolling, I'm curious. Surely, liquids exist in space, and surely they must pool? If it were a *water* lake I'd say that'd be something (life!?), but on a planet where there's likely methane rain, there's likely methane lakes.

    1. Re:What would be the significance of this? by bc90021 · · Score: 5, Interesting

      What do you moderators not understand about "I'm not trolling, I'm curious."? I'm looking for more knowledgeable people in the Slashdot community to answer the question of the finding's significance. It's one thing to find something, and report it, but TFA gives no reason as to why this is important. Does it allow for future bases on Titan to somehow suck up methane for fuel? Is there the possibilty of methane-based life that might live in a methane lake? I'd like to know why this is important.

    2. Re:What would be the significance of this? by bc90021 · · Score: 2

      No, I didn't realise that. Now I do. I'll not use that in the future. Thanks. ;)

    3. Re:What would be the significance of this? by ProfaneBaby · · Score: 4, Insightful

      It's based primarily on the assumption that liquid pools are more likely to harbor the beginnings of 'some form' of life. Methane, being a carbon derivative, could perhaps provide the initial basis for simple lifeforms.

      I basically agree with you - the 'wow' factor is nice, but the true value is still pretty questionable.

      --
      Video Phone Blogs send video messages straight to the web.
    4. Re:What would be the significance of this? by p3d0 · · Score: 5, Informative
      Surely, liquids exist in space, and surely they must pool?
      Amazingly, no. This would make Titan only the second known celestial body that currently has liquid on its surface.

      Liquids require pressure (see this) while solids and gasses don't, and pressure is a rare thing in space.

      --
      Patrick Doyle
      I mod down every jackass who puts his moderation policy in his sig. Oh, wait a sec....
    5. Re:What would be the significance of this? by Anonymous Coward · · Score: 0

      They would be hydrocarbon lakes. And life who knows? I wonder if reverse phase life is possible. With the cell membrane made out of ice.

    6. Re:What would be the significance of this? by mazarin5 · · Score: 3, Interesting

      Well, besides beings merely interesting, it's nice to see what were previously thought to be Earth-unique features on other bodies. Lakes and rivers aren't really found anywhere else, maybe at one point Mars, and maybe longer ago on Venus. To find a lake and a full water cycle, even if it's really methane, is significant because that brings our counter of objects which have lakes and rain up to 2. The more often we see simliar features and objects on other bodies, the more we can expect to find a useful combination of those same features out there sometime in the distant future. For some, it's comforting to know that you're not a fluke.

      --
      Fnord.
    7. Re:What would be the significance of this? by AnonymousJackass · · Score: 5, Interesting

      I think the major thing of interest here is that Titan is so different to any body in our solar system (other than Earth, of course). The fact that liquid of any kind exists is quite remarkable. It means it has been able to retain pretty much all of it's initial components, unlike most other rocky bodies that heat up and lose a lot of their original constituents. Titan is, I believe, a kind of mini proto-planet. It's similar to how Earth would've been when it was young. The difference, however, is that Earth was in a position to heat up and eveolve, whereas Titan is perpetually frozen. There's a lot of fascinating science there.

      As for methane-based life, I think it's unlikely just because of the extraordinarily low temperatures on there.

    8. Re:What would be the significance of this? by MoonFog · · Score: 1

      In my experience the science section on BBC news reports on a lot of various issues without always presenting them as "wow, look at this", which this seems to be a case of. The researchers interviewed also show a bit of caution.

    9. Re:What would be the significance of this? by ZosX · · Score: 1

      It is indeed true. Don't start out a post with "You can mod me down" or "I'm sure I'll be modded down for this" either. Statements like that will autmatically cause you to be modded down.

    10. Re:What would be the significance of this? by WilburCobb · · Score: 1

      Your question sounds like troll because such a discovery is in itself remarkable. This is science. Anyway, if you are interested in analogies, a high fraction of the primitive Earth atmosphere was methane. Therefore, Titan seem to be a model for what was our past, the original conditions where life begun.

    11. Re:What would be the significance of this? by AviLazar · · Score: 2, Insightful


      That is because mod's are fickle idiots. They don't agree with something so mod it troll. I get meta-mods two-three times a day...if i see yours i will meta-mod it. :)


      On the whole, I agree with you - this is not that impressive. I don't think anyone is going to say "hey lets go swim in liquid methane"...if it was water I would be more impressed. Obviously on a planet that rain's methane there would be a buildup of methane which would equate to a pool. It's like being shocked we have lakes full of water!

      --

      I mod down so you can mod up. Your welcome.
    12. Re:What would be the significance of this? by neil.pearce · · Score: 2

      What about lava?
      Doesn't Venus have lava on its surface?

    13. Re:What would be the significance of this? by Hungus · · Score: 1

      While I agree on solids, gases certainly do not only require pressure but generate it.

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    14. Re:What would be the significance of this? by Leroy_Brown242 · · Score: 0, Offtopic

      "Does it allow for future bases on Titan to somehow suck up methane for fuel?"

      You would hope us humans would have learned out lesson about draining the natural resources by then.

      bah, what was I thinking?

    15. Re:What would be the significance of this? by lucabrasi999 · · Score: 1
      I think the major thing of interest here is that Titan is so different to any body in our solar system (other than Earth, of course)

      Bah! I would say that the Sun is the most unique body in this solar system.

    16. Re:What would be the significance of this? by wwest4 · · Score: 2, Informative

      I think the evidence points to lots of ancient volcanism, but no current activity. Venus does have lots of atmosphere and pressure, but it's probably been dry on the surface for a long time now.

    17. Re:What would be the significance of this? by wwest4 · · Score: 1

      Although I probably should have just googled it before replying. Looks like you were right, and there is evidence of geological hot spots.

    18. Re:What would be the significance of this? by Kombat · · Score: 3, Interesting

      You would hope us humans would have learned out lesson about draining the natural resources by then.

      Uhm, not to be obtuse, but why shouldn't we drain and use the oil here on Earth? Do you think that if we leave it in the ground, it'll somehow eventually turn back into dinosaurs? It's a plentiful, efficient, portable, cheap (relative to the alternatives) energy source.

      The problem with oil isn't that we're using it - it's that we have no plan to handle the byproducts produced by using it. The pollution is the problem. Global warming, smog, and all that. There's no benefit to leaving the oil in the ground and switching to more expensive energy sources before it's necessary.

      --
      Like woodworking? Build your own picture frames.
    19. Re:What would be the significance of this? by Belial6 · · Score: 1

      "You would hope us humans would have learned out lesson about draining the natural resources by then." The problem with using natural resouces isn't that you use them. It is only a problem if you use them faster than they replenish themselves. Or, if you care whether they run out or not.

    20. Re:What would be the significance of this? by Leroy_Brown242 · · Score: 5, Insightful

      "The problem with oil isn't that we're using it - it's that we have no plan to handle the byproducts produced by using it."

      So the hangover is the problem, not the drinking?

      One is caused by the other. If we can't effectivly eliminate the issues our planet suffers by using fossil fuels, then we need to stop.

    21. Re:What would be the significance of this? by Alex+P+Keaton+in+da · · Score: 4, Interesting

      From my limited astronomy background (wasn't my major, but it fascinated me so I paid attention): Through modeling, we can assume that what holds on Earth, should hold on other planets, other galaxies etc.
      I think what we are forgeting is that it seems that we know less about space than sometimes we think. For example, if memory serves me right, there is a lot of dark matter in the fringes of the galaxy- we know it is there because something is having an effect on other bodies there, however we can't detect it because it doesn't seem to emit any known energy source... (Caveat- I am not an astronomer, just a hobbyist, so take my assertion with a salt grain)
      So in my line of reasoning, it seems that this lake on Titan may not have the same characteristics as a similar lake on Earth, for a plethora of reasons that we may not understand yet.
      All that aside, how cool would it be to swim on another planet, even if in a lake of methane...
      And for those with tinfoil hats- keep in mind that some assume that we don't get real info from NASA- such as those who say that gravity on the moon is much closer to the Earth's gravity, unlike what we are told, but this can't be released because it would throw a Geurilla Wrench into the theory of relativity....

      --
      And All I Ask is a Tall Ship And a Star to Steer Her By
    22. Re:What would be the significance of this? by Ateryx · · Score: 0, Redundant

      pressure is a rare thing in space

      So is sound.

      Don't roll your eyes, you know you were thinking it, I just have the audacity (Republican), charisma (+24), and timing (+28 dexerity) to say it. You're jealous. I would be too.

      --
      "The truth suffers from too much analysis"
    23. Re:What would be the significance of this? by htrp · · Score: 5, Informative

      What we mean to say is that on planets that have any kind of atmosphere, there will be some kind of fluid present. If you look at a phase diagram (crack out your old chem books), you'll realize that liquids can only exist at certain temperatures and pressures before becoming either solid or gas. As the majority of space is rather cold and the pressure is rather low, this tends to favor the formation of solids and gases.

      As for your venus question, I would venture to imagine that lava, as a higly viscous fluid would remain liquid at a relatively low pressure. The other mention is that the surface of venus is basically a massive cooking oven from all of the cloud cover of various Sulfur oxides, which would provide both sufficient temperature (from the greenhouse effect) as well as indicate a high amount of atmospheric pressure.

      What's significant about this was that it was initially hypothesized that since titan had a considerable atmosphere of methane and other hydrocarbons, that the surface of Titan was possibly covered in either a massive liquid methane ocean or a methane ice sheet. However once the Huygens probe landed, that hypothesis was disproved (the one about liquid methane on the surface).

      With what looks like a lakebed (even if it's dry) on the surface of Titan, this provides evidence that there once was/still is some liquid which eroded the landscape, which confirms that Titan's atmosphere may be more substantial than other planet's and that it may be more like earth.

    24. Re:What would be the significance of this? by keraneuology · · Score: 1
      The difference, however, is that Earth was in a position to heat up and eveolve, whereas Titan is perpetually frozen.


      Until the sun starts to edge towards being a red giant... Titan will have ample opportunity to be toasty then. Admittedly, not for a period anywhere near as long as earth has enjoyed, and the surface of the sun will be much closer to Titan leading to some minor inconveniences of radiation....

      --
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    25. Re:What would be the significance of this? by KamaDragon · · Score: 2, Interesting
      Liquids require pressure (see this) while solids and gasses don't, and pressure is a rare thing in space.

      I guess I do not understand your meaning. If anything, a solid requires more pressure than a liquid. If you have a system (held isothermal) composed of a gas and you increase the pressure, what happens? It condenses to a liquid. Continue to increase the pressure, and then what? Your liquid freezes to a solid.

      Given the context of space, I think I see your intention. That is, at extremely low temperatures a pressure change would most likely result in either sublimation or deposition. However, on a celestial body you can get greater temperatures than that of the vacuum of space.

      --
      -KD
    26. Re:What would be the significance of this? by Anonymous Coward · · Score: 0

      He means that solids, once formed, don't require any pressure. All those rock asteroids floating around up there are solids, and have no pressure acting on them.

    27. Re:What would be the significance of this? by HiredMan · · Score: 2, Interesting

      but why shouldn't we drain and use the oil here on Earth?

      See your answer below.

      The pollution is the problem. Global warming, smog, and all that.

      "It's not the shooting that's the problem... it's the holes poked in everything! Just because we don't have a solution now is no reason to stop shooting indiscriminately."

      =tkk

    28. Re:What would be the significance of this? by Anonymous Coward · · Score: 0

      then what?

      should we go live in the forest cause society as we know it will basically end.

      are you ready to stop using your computer. are solar panels running your house.

      what are you doing to lead. sit there and make comments on forums all you want, but have you done anything tangible to stop using oil. no you are addicted just like everyone else.

    29. Re:What would be the significance of this? by Zordak · · Score: 1
      the Sun is the most unique body in this solar system.
      Well, at least it was until that monolith showed up.
      --

      Today's Sesame Street was brought to you by the number e.
    30. Re:What would be the significance of this? by yotto · · Score: 1

      If I had mod points, I'd mod you up as "insightful."

      If I hadn't used them all by now modding down people who say 'Feel free to mod me down, but...' or '...And I know you're all going to mod me down for saying it!'

    31. Re:What would be the significance of this? by Leroy_Brown242 · · Score: 1, Flamebait

      This, coming from someone too nutless to post under their own name.

      Grain of salt taken.

    32. Re:What would be the significance of this? by IEEEMonkey · · Score: 1

      Methane (Biogas) from Anaerobic Digesters

      Methane is a gas that contains molecules of methane with one atom of carbon and four atoms of hydrogen (CH4 ). It is the major component of the "natural" gas used in many homes for cooking and heating. It is odorless, colorless, and yields about 1,000 British Thermal Units (Btu) [252 kilocalories (kcal)] of heat energy per cubic foot (0.028 cubic meters) when burned. Natural gas is a fossil fuel that was created eons ago by the anaerobic decomposition of organic materials. It is often found in association with oil and coal.

      The same types of anaerobic bacteria that produced natural gas also produce methane today. Anaerobic bacteria are some of the oldest forms of life on earth. They evolved before the photosynthesis of green plants released large quantities of oxygen into the atmosphere. Anaerobic bacteria break down or "digest" organic material in the absence of oxygen and produce "biogas" as a waste product. (Aerobic decomposition, or composting, requires large amounts of oxygen and produces heat.) Anaerobic decomposition occurs naturally in swamps, water-logged soils and rice fields, deep bodies of water, and in the digestive systems of termites and large animals. Anaerobic processes can be managed in a "digester" (an airtight tank) or a covered lagoon (a pond used to store manure) for waste treatment. The primary benefits of anaerobic digestion are nutrient recycling, waste treatment, and odor control. Except in very large systems, biogas production is a highly useful but secondary benefit.

      Good source to understand organisms and methane.

    33. Re:What would be the significance of this? by Anonymous Coward · · Score: 0

      "He means that solids, once formed, don't require any pressure."

      That's just not true. Look at a phase diagram.

    34. Re:What would be the significance of this? by jonro · · Score: 1

      Which means that lighting your backyard BBQ grill would probably be a bad idea, since it could ignite the entire planet.

    35. Re:What would be the significance of this? by ehiris · · Score: 1

      I read the wikipedia description and I don't understand your analogy. Solids require even more pressure. Are the solid/temperature relations that create liquids which are rare?

      Don't forget that there are billions of stars just in our galaxy so saying that pressure is rare in space is a HUGE assumption.

    36. Re:What would be the significance of this? by RosenSama · · Score: 1
      This would make Titan only the second known celestial body that currently has liquid on its surface.
      Out of the huge catalog of celestial bodies that we know anything about the surface of?
      Liquids require pressure (see this) while solids and gasses don't, and pressure is a rare thing in space.
      I think I know what you're trying to say, but temperature and pressure while infrequent in space aren't therefore improbable. Now the context isn't really space, but the surface of celestial bodies and signficant to me implies improbable not infrequent.
    37. Re:What would be the significance of this? by MrWarMage · · Score: 1

      Heh, yeah, That's a solid standpoint. "Faceless person challenges my point of view so I'll erect a convenient excuse to render them less-correct." This is often called "Shooting the messenger." :)

    38. Re:What would be the significance of this? by p4ul13 · · Score: 0
      All that aside, how cool would it be to swim on another planet, even if in a lake of methane...

      According to a quick googling "Liquid Natural Gas (Liquid Methane) is made by cooling natural gas to a temperature of minus 260 degrees F" so I think swimming in a lake of methane would be quite literally cool.

      Of course I do realize you didn't mean a person wearing a speedo jumping into the methane lake, but the mental image inspired my inner (and outer) geek.

      --
      Paul Lenhart writes words!
    39. Re:What would be the significance of this? by uberdave · · Score: 1

      Another problem with oil (apart from the pollution) is the non-renewability of it. As an energy source, it is a dead end. Think of it as a battery. Eventually it will be drained, and we have no way of recharging it. To base our entire economy on it is short sighted.

      Having said all that, as supply goes down, prices will go up, and eventually other energy sources will come to the forefront. There's going to be a lot of painful upheaval as that happens, unless we start preparing for it.

    40. Re:What would be the significance of this? by Leroy_Brown242 · · Score: 1

      It's an old standby. :)

    41. Re:What would be the significance of this? by lcam · · Score: 1

      Sometimes when it's really cold (like -120 C) you may find methane lakes. At that temp where water is solid these Hydrocarbons may evaporate and consense, form slushy puddles/lakes (rivers)?

    42. Re:What would be the significance of this? by infonography · · Score: 1

      "Well, at least it was until that monolith showed up. "
      Has Zordak (123132) said in a slightly different thread

      However Titan isn't perpetually frozen, it does lack Sunlight as a energy source. Titan's core provides heat, so the ecology would be inverse to our own. Kind of like the Hollow planet theories that where thrown around by The Vril Society and in Bulwer Lytton's novel The Coming Race (1871).

      --
      Sorry about the writing. Robot fingers, you know? Cliff Steele in DOOM PATROL #23
    43. Re:What would be the significance of this? by mopomi · · Score: 4, Interesting

      Umm. . . No.

      Io was the second known body to have liquids on its surface (1979 Voyager flybys discovered active, extrusive volcanism). Titan was next, though we couldn't see through the clouds, so we had no idea. Triton was the fourth to possibly have liquids on its surface, though we still don't know for sure. Venus also likely has some liquid lava on its surface, though we've not seen actual volcanism. Plus, Venus probably sometimes has sulfuric acid rains, but we're not sure. Mars may also have transient liquids on its surface.

      Titan's cool because it's probably got an active hydrologic cycle (don't read hydro- to mean water, read it to mean fluid). Earth does, Venus might, Io has. . . something, Mars had one, it might still, occasionally. Triton has. . .something, and that's about it for the bodies in the solar system.

      Earth is a big body, so it still has radionuclide heat, and it's close to the sun, so it's got an abundance of energy to drive a hydrologic cycle. We can't see through Venus' clouds with more than RADAR, so we don't know what's going on there. Mars is small, so its heat has mostly left it, and it gets nearly 1/4 the energy the Earth gets from the sun, so it's cold and has little atmosphere left. Io is in a weird, slightly eccentric, orbital resonance, so its energy comes at the expense of Jupiter (and Ganymede and Europa). Titan's also in an eccentric orbit, but it doesn't have the resonance with other sats that Io has, so it "should" have lost most of its energy--one of the mysteries is why such a small body has such a huge atmosphere (and thus a hydrologic cycle). Triton might have a bit of an atmosphere, and why is also a mystery.

      So, of the many, many bodies in the solar system, there are only a few that have atmospheres, and fewer that have an active, observable hydrologic cycle. . .

    44. Re:What would be the significance of this? by william_w_bush · · Score: 1

      umm, yeah, but no. Oil is amazing shit, long chain hydrocarbons, can be easily refined to other products. The idea of taking something that is insanely hard to create (the energy required to create a barrel of oil is 1000x more than you get burning it considering pressure and starting biomass), and incredibly useful and setting on fire to push your car. Plastics are a great use for oil, and moderately recyclable. Also, we cannot handle and process oil properly yet, so taking it out of the ground means spilling half of it (chemical processing, vapor loss, toxic spills) before we use it. This is less of a technical matter and more of a cost/lazyness/stupidity issue, not all kids clean their room till their mother yells at them.

      Not saying force the change now, but if you keep saying "It's ok, we'll change when it's affordable" It will never be affordable till you've either run out or screwed up enough of the environment. Oh, did I mention oil tends to be a politically destabilizing influence?

      --
      The first rule of USENET is you do not talk about USENET.
    45. Re:What would be the significance of this? by krgallagher · · Score: 1
      "Surely, liquids exist in space"

      Actually no. Liquids cannot exist in a vacuum. Instead, some portion of the mass flashes into a vapor. This change of state reduces the temperature of the remaining mass until it freezes into a solid. So in a true vacuum (like space) matter only exists in three states, solid, gaseous, plasma. I tried to find a good link for an explanation, but this was the best I could find on short notice. If you look at the summary, you will find a line that says, "When pressure is sufficiently low, a substance may not be able to exist as a liquid, but only as a solid or a gas." That is what I am talking about.

      --

      Insert Generic Sig Here:

    46. Re:What would be the significance of this? by isomeme · · Score: 1

      Liquid is relatively uncommon on the surfaces of things in space. It's the middle ordinary state of matter, in between solids and gasses. As such, it's inherently unstable; for extreme values of pressure or temperature (low or high), you get a solid or a gas.

      It takes a peculiar set of circumstances for a liquid to persist long-term on the surface of a planet; just to start with, you need an atmosphere of high enough pressure to get above the triple point. Below that pressure, the solid phase transitions directly to the gas phase and back. This is the case for carbon dioxide at 1 atm, hence the behavior of dry ice.

      So far the only place we know of with relatively stable bodies of liquid on its surface is Earth. Thus, the discovery of a second body with stable liquid on its surface would allow us to cross-check a lot of theories of planetary dynamics which currently rely on a single data point.

      --
      When all you have is a hammer, everything looks like a skull.
    47. Re:What would be the significance of this? by DragonWyatt · · Score: 1

      So the hangover is the problem, not the drinking?

      To continue your analogy:

      Being an alcoholic, then, is only a problem when you run out of alcohol?

      --
      Don't sweat the petty things. But do pet the sweaty things.
    48. Re:What would be the significance of this? by quarkscat · · Score: 1

      Ahhh!
      So now you have stumbled upon the real reason that
      Dubya wants to "go to Mars". What better reason
      than that to invade, if not to scrounge new energy
      sources for this regime's taskmasters?

      Mere water lakes implies possible life there, and
      the likely conflict over natural resources. OTOH,
      methane breathes new life into the USA's petroleum
      industry, even if only for export to Mars. Just
      think of the transportation fees Haliburton could
      charge! New sources of energy and new markets,
      but with Uncle (Sucker) Sam picking up the tab --
      what's not to like (thinks Dubya)?

    49. Re:What would be the significance of this? by MenTaLguY · · Score: 1

      If we can't effectivly eliminate the issues our planet suffers by using fossil fuels, then we need to stop.

      ...you first?

      --

      DNA just wants to be free...
    50. Re:What would be the significance of this? by ant1441 · · Score: 1

      Oh, did I mention oil tends to be a politically destabilizing influence?
      Yes! somebody finally realises what Ive been saying all these years (albeit offline) Oil is the reason for wars, not evil dictators. Although they are kind of a problem.

    51. Re:What would be the significance of this? by tjmcgee · · Score: 1

      What kind of "value" are you looking for? If you want there to be a practical application then you will be disappointed. The major significance is that if verified, this would be the first finding of liquid on the surface of another body in the solar system.

      If confirmed it would imply that liquids on the surface of planets and moons could be common in solar systems like ours.

      You are correct in assuming that it is not water. It's hard to imagine a scenario where liquid water could exist on the surface of Titan.

      I don't think that this lake will be useful to mankind for a very long time if ever, but the implications are important, thought provoking, and help people who study these things improve their theories and models. I find this valuable, others may be looking for something more tangible

    52. Re:What would be the significance of this? by cowscows · · Score: 2, Interesting

      that's sort of a silly analogy, because shooting indiscriminately doesn't really result in anything productive. We aren't burning billions of gallons of oil per day just for fun. Fossil fuels have helped us create all sorts of neat technology and culture and things.

      Who knows if we would've gotten this far without them. Is it realistically possible to go from water and wood burning straight to nuclear and solar? Could we have made the leaps in technology that we have without such a cheap and abundant energy source waiting for us right in the dirt?

      Fossil fuels have been quite a step in our energy generation timeline. It has had plenty of unforeseen consequences, but that's life. Now, you can certainly argue that humanity, as a whole, is dragging its feet instead of moving along to the next step, but that doesn't mean that fossil fuels are evil or have been a waste of humanity's time.

      Let me try and balance out your analogy with one of my own:
      Walking is more efficient for humans than crawling, yet we don't scold babies for crawling on all fours instead of running around on two feet. We understand that it's one step in the process, and as a child grows, it makes better choices and becomes more efficient with its energy.

      --

      One time I threw a brick at a duck.

    53. Re:What would be the significance of this? by t35t0r · · Score: 1

      extraordinarily low temperatures on titan? You mean like at 1-2 miles below sea level where millions of microbes live happily?

    54. Re:What would be the significance of this? by drsquare · · Score: 1

      When this vapourised mass evaporates into space in a vacuum, where does it go? Nowhere, so gravity drags it back, applying its heat back to the mass. Therefore there is no overall temperature change.

      Also you're assuming there is no heat source in the centre of the body. This would keep it at a liquid state, with a thin vapour atmosphere. Imagine if a liquid methane planet crashed into a liquid oxygen planet. And someone lit a match!

    55. Re:What would be the significance of this? by clem9796 · · Score: 1

      The same reason water boils faster at higher elevations.. Less pressure the more capable a fluid is of vaporizing.

      --
      IANALOOA
    56. Re:What would be the significance of this? by p3d0 · · Score: 1

      Hint: spacecraft are solid.

      --
      Patrick Doyle
      I mod down every jackass who puts his moderation policy in his sig. Oh, wait a sec....
    57. Re:What would be the significance of this? by p3d0 · · Score: 1
      Thanks for the reference to Io. I originally had "permanent liquid" but removed the word "permanent" because I thought I'd get into arguments over that one.

      Thanks also for the "hydrologic cycle" info.

      --
      Patrick Doyle
      I mod down every jackass who puts his moderation policy in his sig. Oh, wait a sec....
    58. Re:What would be the significance of this? by ZosX · · Score: 1

      Yeah. They need to divvy out mod points a little more. The few times that I get them I end up using them all on modding trolls and idiots who say "mod me down, but..."

      I get moderator points like once every few weeks to a month or so. I guess if you meta-moderate you get better chances of getting points, but you think that someone with excellent karma and a good posting record would get points more often.

      Oh well, time to metamoderate I guess. :)

    59. Re:What would be the significance of this? by ZosX · · Score: 1

      Yeah. They need to divvy out mod points a little more. The few times that I get them I end up using them all on modding trolls and idiots who say "mod me down, but..."

      I get moderator points like once every few weeks to a month or so. I guess if you meta-moderate you get better chances of getting points, but you think that someone with excellent karma and a good posting record would get points more often.

    60. Re:What would be the significance of this? by swv3752 · · Score: 1

      Remove pressure from the equation and you still can get solids or gas, but not liquids.

      A common molecule, CO2 (Carbon Dioxide), does not form a liquid at normal pressure (I think it takes 7 atmospheres, a google search will reveal it but I'm too lazy to bother). It is called Dry Ice when frozen, because when it melts, it directly subliminates to a gas. the point is that Dry Ice illustrates what happens to other compounds at low pressures.

      --
      Just a Tuna in the Sea of Life
    61. Re:What would be the significance of this? by swv3752 · · Score: 1

      Phase Diagrams is what I think you are looking for. Triple point is the term for where at a given temperature and pressure a compound is in equilibrium between solid, gas, and liquid. Lower the temperature or pressure and a liquid state becomes impossible. 4.5 torr and 0.0098C is the triple point for water.

      --
      Just a Tuna in the Sea of Life
    62. Re:What would be the significance of this? by susano_otter · · Score: 1

      My theory is that current and future technology is based on heavy industrialization, which is then incrementally replaced by lighter and lighter post-industrial solutions that are all made possible by classic industrial principles like auotmation, mass production, and economies of scale.

      So my answer to your question is "no". Fusion requires materials that can only be researched and developed using advanced (oil-powered) industrial techniques. Wood power just isn't efficient enough.

      --

      Any sufficiently well-organized community is indistinguishable from Government.

    63. Re:What would be the significance of this? by Anonymous Coward · · Score: 0

      The last close images I saw of Titan appeared as though this is really fairly common... the surface looks like something that melts and refreezes constantly.

      I am surprised how FEW images I have seen from the Titan Probe. Wassup with that? No one give a damn?

    64. Re:What would be the significance of this? by Scorillo47 · · Score: 1

      >>> And for those with tinfoil hats- keep in mind that some assume that we don't get real info from NASA- such as those who say that gravity on the moon is much closer to the Earth's gravity, unlike what we are told, but this can't be released because it would throw a Geurilla Wrench into the theory of relativity....

      Believe me - any aspiring scientist would LOVE to throw a Guerilla Wrench into the theory of relativity. How does a Nobel prize sounds to you?

      --
      Don't try to use the force. Do or do not, there is no try.
    65. Re:What would be the significance of this? by Paradise+Pete · · Score: 1
      Solids require even more pressure.

      To form them, yes. After that they don't care. Liquids disperse without pressure.

    66. Re:What would be the significance of this? by mopomi · · Score: 1

      No problem. It always surprises me that Io isn't as well known as it should be (IMHO). It's the most geologically active body we've ever observed, but it's quietly ignored by so many people simply because it doesn't have water on it (thus it doesn't fall under NASA's "follow the water" mantra). Well, that's sad because the Earth was likely very similar to Io right around the time life started popping up here (although Earth had [nearly] infinitely more water).
      If you want to understand the conditions that dictated when life could evolve, study Io!

      I'm not sure what you mean by permanent liquid, and I'm guessing that's why you deleted it. =-}

    67. Re:What would be the significance of this? by Famanoran · · Score: 1

      I'm not so sure. I heard a theory once that oil is not a byproduct of dead dinosaurs or anything, but is actually a waste product of all the magma underneath the Earth's crust seeping up through all the layers of the Earth.

      Whether or not this is true is an entirely different matter, but if it is possible, then it may mean that oil is easily renewable - it happens automatically. How quickly it renews is another question as well..

    68. Re:What would be the significance of this? by VanillaCoke420 · · Score: 1

      Because knowledge in and of itself is cool.

    69. Re:What would be the significance of this? by juhaz · · Score: 1

      Earth was likely very similar to Io right around the time life started popping up here (although Earth had [nearly] infinitely more water).
      If you want to understand the conditions that dictated when life could evolve, study Io!


      Just because the volcanism may have been somewhat similar doesn't make it the same! Mantra or no mantra, the water does make helluva big difference, not to mention it's not on the Green zone, and has Jupiters radiation nicely toasting everything, so the conditions are really almost nothing alike.

      I'm not sure what you mean by permanent liquid, and I'm guessing that's why you deleted it. =-}

      Presumably something that hasn't turned to rock five minutes after being in liquid form?

    70. Re:What would be the significance of this? by AnonymousJackass · · Score: 1

      No, Titan surface temperatures are on the order of -180C (-290F). You won't find that occurring naturally anywhere on Earth.

    71. Re:What would be the significance of this? by HiredMan · · Score: 1

      that's sort of a silly analogy, because shooting indiscriminately doesn't really result in anything productive.

      I wasn't trying to draw an analogy as much as I was trying to point out that your question was stated as "Other than effect, what's wrong with cause?"
      The obvious only answer to any question stated that way is 'nothing' since you already acknowledged "effect" so why even ask?

      The real problem is that many people don't even acknowledge the effect and resent any attempt to mitigate the cause. And all the while the cause spreads (encouraged by us) while some try to actively deny the effect.

      =tkk

    72. Re:What would be the significance of this? by uberdave · · Score: 1

      I've heard this as well. It doesn't "feel" right though; Hydrocarbon based fluids developing from molten rock. The toasted dino theory is a lot easier to swallow.

      It doesn't alter my point much either way. We need to move to a production/consumption balance with whatever fuel system we decide upon, or else we'll wind up in trouble.

  3. Fly Fishing by Shadow+Wrought · · Score: 2, Funny

    And the Space tourism boon gets another boost.

    --
    If brevity is the soul of wit, then how does one explain Twitter?
    1. Re:Fly Fishing by mcwidget · · Score: 1

      Yup, just where I'd like to be, next to a 75km by 235km lake of.. methane. Nice. In fact, maybe it's a Butlins?

    2. Re:Fly Fishing by babyblink · · Score: 1

      At least we have a name for the first turtle found in the lake.

      --
      [self dealloc];
    3. Re:Fly Fishing by ehiris · · Score: 1

      There are a lot of more fun things to do on a lake. Imagine wakeboarding in low gravity. The tricks and you could pull would be amazing.

    4. Re:Fly Fishing by Anonymous Coward · · Score: 0

      I heard it from a fellow who hasactually seen it!! There's a monster in that lake!!

  4. Great deal by autopr0n · · Score: 2, Funny

    Once prices go up, the government will just seize it under eminent domain!

    --
    autopr0n is like, down and stuff.
    1. Re:Great deal by telecsan · · Score: 2, Funny

      How are prices going to go up near a lake of liquid methane? Talk about a stinky place to live...

    2. Re:Great deal by IEEEMonkey · · Score: 3, Informative

      Actually Methane gas has no odor. We add impurities to it in order to make it detectable.

    3. Re:Great deal by Anonymous Coward · · Score: 0

      Methane is odorless. You smell sulfurous compounds in farts (H2S I think).

    4. Re:Great deal by PaxTech · · Score: 1

      All this talk of "dark deposits" and methane is making me wonder if I stumbled onto Scatdot by mistake.. :D

      --
      All movements for social change begin as missions, evolve into businesses, and end up as rackets.
    5. Re:Great deal by Anonymous Coward · · Score: 0

      And when the prices go up:
      Profit!

    6. Re:Great deal by Winkhorst · · Score: 1

      That's because it's explosive...

      --
      "Is this Winkhorst a nova criminal?" "No just a technical sergeant wanted for interrogation."
    7. Re:Great deal by ShortBeard · · Score: 0

      you're shittin' me

  5. Strewth... by gowen · · Score: 3, Funny

    I knew Ricki Lake had a fat ass, but I didn't know you could see it from space.

    --
    Athletic Scholarships to universities make as much sense as academic scholarships to sports teams.
    1. Re:Strewth... by macaulay805 · · Score: 2, Funny

      and think of how long the dark deposits have been sitting there when the probes found 'em.

    2. Re:Strewth... by Anonymous Coward · · Score: 0

      Bad news... Rosie O'Donnel is dead. Found her floating face down in Ricki Lake.

  6. Watch Out!!! by millahtime · · Score: 1

    What they don't tell you is, Don't Drink The Water!!!!

    1. Re:Watch Out!!! by Anonymous Coward · · Score: 0

      It's not any worse than Mexico's.

  7. Not a lake by Glog · · Score: 3, Funny

    The announcement was later rectracted by NASA officials after it was confirmed that the "dried-up lake" was, in fact, Joan Rivers vacationing in the new Klingon botox retreat.

  8. Light please! by Ham_belony · · Score: 0

    I dare you to light my cigar standing at that lake!

    1. Re:Light please! by MightyMartian · · Score: 4, Insightful

      There's no free oxygen in Titan's atmosphere. You couldn't even get the match to burn.

      --
      The world's burning. Moped Jesus spotted on I50. Details at 11.
    2. Re:Light please! by KagatoLNX · · Score: 1


      And if the (RIAA|MPAA|Terrorists|United States|SCO Corporation|Republicans|Democrats|.*) gets their way, there'll be no free oxygen on Earth either!

      RMS! Woohoo!
      </sarcasm>

      --
      I think Mauve has the most RAM. --PHB (Dilbert Comic)
    3. Re:Light please! by Anonymous Coward · · Score: 0

      Get a match and cigar made out of copper oxide, which should burn in the hydrocarbon atmosphere.

  9. Interesting, but... by Formula420 · · Score: 1, Interesting

    I am more interested in what Cassini finds once it gets to Europa. A possible methane lake seems inconsequential compared to the supposed "water world" of Europa. Then again, I suppose if it was in the neighborhood, it might as well check out Titan and see what's shakin, or lakin' as the case may be...

    1. Re:Interesting, but... by Anonymous Coward · · Score: 1, Funny

      hint: you are at the wrong planet ...

      cassini left the jupiter orbit quite some time ago without stopping

    2. Re:Interesting, but... by Anonymous Coward · · Score: 0

      I suppose a few billion years of orbital perturbations might bring Cassini (currently orbiting Saturn) to Europa (currently orbiting Jupiter) but I wouldn't hold my breath.

    3. Re:Interesting, but... by sarastro_us · · Score: 2, Informative

      Wrong planet, wrong moon. Europa is a moon of Jupiter. Titan is a moon of Saturn.

    4. Re:Interesting, but... by Anonymous Coward · · Score: 0

      And here is a moon of Uranus!

    5. Re:Interesting, but... by Formula420 · · Score: 1

      I am totally retarded, please mod me into oblivion. I do think it is kind of funny that, for the moment, it is still +2, Interesting. Please remedy this situation and I will keep my mouth shut for the rest of the thread. Thank you.

  10. Got a match? by tzuriel · · Score: 5, Funny

    In other news, Titan went up in flames earlier this morning when a careless tourist ignored the "No Smoking" signs clearly posted in the vicinity of "Methane Lake". When will these off-worlders learn to pay attention?

    1. Re:Got a match? by CausticPuppy · · Score: 2, Informative

      Come on... even us ignorant off-worlders are smart enough to know that methane won't burn in the absence of oxygen.

      --
      -CausticPuppy "Of all the people I know, you're certainly one of them." -Somebody I don't know
    2. Re:Got a match? by Anonymous Coward · · Score: 0

      HEY EVERYONE!!! Last one in's a rotten eg....YEEEEEE-OWWWWWWWWWWWWWWWWCH!

    3. Re:Got a match? by tzuriel · · Score: 1

      Clearly, the scenario described is in a future where Titan has been covered in a protective bubble to provide an oxygen-rich atmosphere. I mean, come on!

  11. It could also be.. by erikkemperman · · Score: 2, Insightful

    But don't get too excited yet [...] it could also be a dried up lake that left dark deposits.

    IANA rocket scientist but.. Would we not be excited if it turned out to be a lake -- dried up or otherwise? I mean, are dried-up lakes often found out there, relative to not-yet-dried-up ones? Just curious.

    --
    Gosh, thanks. That must be why the other ships call me Meatfucker -- GCU Grey Area (Eccentric)
    1. Re:It could also be.. by Nytewynd · · Score: 1

      If it isn't dried up, we could try to land near it and do research on the liquid. We might learn more than just looking at a dried up lake. There might even be organisms of some sort in the methane.

      Being a lake of methane does create unique problems I guess. It might be hard to do things around it with electrical equipment without blowing up the entire lake. I wonder if methane can blow up in a place without oxygen.

      --
      /. ++
    2. Re:It could also be.. by erikkemperman · · Score: 1

      If it isn't dried up, we could try to land near it and do research on the liquid.

      Not to belabour the point, but likewise I would imagine we could land near (or even in) a dried up lake and do research on the deposits?

      I guess my original question was: why would the dried-up-ness matter so much? TFA is sort of neutral but the summary suggests that it would be a big disappointment if it were dried up. Presumably this is because of a belief that some fluids are prerequisite to life, but where exactly does that come from (other than Earthling experience)?

      Being a lake of methane does create unique problems I guess. It might be hard to do things around it with electrical equipment without blowing up the entire lake. I wonder if methane can blow up in a place without oxygen.

      No idea, we're talking about liquid methane so it is below -160 degrees Celsius. Can you burn liquid methane at all, even on Earth? For sure an explosion would not make for a satisfactory KABOOM, what with no atmosphere :)

      --
      Gosh, thanks. That must be why the other ships call me Meatfucker -- GCU Grey Area (Eccentric)
    3. Re:It could also be.. by erikkemperman · · Score: 1

      a satisfactory KABOOM, what with no atmosphere

      Oh, wait. Titan of course DOES have an atmosphere, so they'd better have a mic up there.

      --
      Gosh, thanks. That must be why the other ships call me Meatfucker -- GCU Grey Area (Eccentric)
    4. Re:It could also be.. by KamaDragon · · Score: 1
      I wonder if methane can blow up in a place without oxygen.

      Well, it can't combust.

      The methane combustion reaction is: CH4 + 2O2 -> 2H20 + C02

      --
      -KD
  12. awesome by tont0r · · Score: 0

    The feature lies in Titan's cloudiest region, which is presumably the most likely site of recent methane rainfall. (from nava.gov)

    nothing like a big ol lake about the size of Lake Ontario of methane sitting around. kinda rules out the thought that life is sitting in there. unless its a new breed of methane breathing fish :).

  13. Really bad joke ... by Anonymous Coward · · Score: 0

    You Titan, me-thane

  14. So there's this feature... by exp(pi*sqrt(163)) · · Score: 2, Insightful

    ...clearly visible and 235km across that looks like a like. Previosuly a probe landed on Titan photographing lakelike features all the way down. And the only way people can be sure it is a lake is by viewing the feature from the right angle to see if it glints in the sun. 235km across! I don't know about you, but if that's the best they can do, I think they loaded up Cassini and Huygens with the wrong set of instruments.

    --
    Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    1. Re:So there's this feature... by Anonymous Coward · · Score: 0

      Okay, go ahead and do a better job.

    2. Re:So there's this feature... by burnttoy · · Score: 1

      I dunno about the _wrong_ set of instruments after all there's an enormous number of restrictions on what they can send (mostly weight I suspect) but it is a shame that they didn't take a MARSIS style detector and Huygens was necessarily (weight again) restricted in its scope. Nevermind! I just hope they send another probe (or cluster of probes - or even titan aeroplane) next time. It is a truely fascinating world in our solar system. Then again so are Europa, Callisto and Triton.

      I suspect they were deliberatley conservative with the Huygens probe.. after all they didn't know if it would sink into the surface when it got there.

      These unmanned missions do truely rock. Altoughit's nice to send people out in to space these probes can stay out there a long, long time. I believe Cassini has another 39 Titan flybys to complete yet. That's a lot of data. I'm looking forward to it!

      --
      Time flies like an arrow. Fruit flies like a banana.
    3. Re:So there's this feature... by hcob$ · · Score: 2, Insightful

      Actually, I think it's an elegantly simple solution to a complex problem. To detect "lakes" by other means would likely require a device that performs many varied tasks consistantly and have the ability to survive a space trip. Also, it would most likely be a highly dedicated piece of equipment taking up valuable space. Not to mention, how do you detect if something is liquid from orbit??? If you have an easy answer, I'm sure NASA would LOVE to hear it. Also, they were going to have cameras anyway for pictures and such. So being the physics/flight path calculating gods that they are, they were able to tell that in some of the flybys they were going to be at a 90 degree angle and can just point a camera at the object and quickly know if it was a lake. A secondary use for a relatively small piece of equipment is a much more desirable approach to another piece of equiment that may or may not even be used...... I think it's pretty obviuos that they chose the right equipment.

      --
      Cliff Claven
      K.E.G. Party Chairman
      Founding Leader of: Koncerned for Egalitarin Governance
    4. Re:So there's this feature... by InfiniteWisdom · · Score: 1

      Finding lakes was not a part of the mission plan... it was a chance discovery. They can't possibly load it up with every instrument they might ever conceivably need.

    5. Re:So there's this feature... by Professr3 · · Score: 1, Funny

      Yes they can, all they have to do is put a Bat Utility Belt on it, and *poof*! Any instrument they could ever need.

    6. Re:So there's this feature... by Anonymous Coward · · Score: 1, Insightful

      NewScientist reports the picture was taken from 450,000 kilometers away. Pretty darn good resolution to spot a 235 km lake from that distance.

    7. Re:So there's this feature... by Anonymous Coward · · Score: 1, Insightful

      Hello, McFly? Star Trek like sensors that can detect chemical composition of a substance under any condition under any situation from zillions of miles away do not exist. Scientist still have to go thru the hypothesis, observer, conclusion, reexamine again, over steps.

    8. Re:So there's this feature... by KillerBob · · Score: 1

      Yeah, but how long can Adam West hold his breath?

      --
      If you believe everything you read, you'd better not read. - Japanese proverb
    9. Re:So there's this feature... by exp(pi*sqrt(163)) · · Score: 1

      It's not a chance discovery. In fact, Huygens was designed to land on either a liquid or solid surface.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    10. Re:So there's this feature... by exp(pi*sqrt(163)) · · Score: 2

      Eh? You can see features 235km across on the Moon (ie. Earth's satellite) with the naked eye. The Moon is about 400,000km from Earth.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    11. Re:So there's this feature... by exp(pi*sqrt(163)) · · Score: 1

      The ESA are doing a great job with locating liquids on Mars. I wish some of the same devices had been installed on Cassini. The possibility of liquids (either hydrocarbon or ammonia based) had been touted as one of the interesting possible features of Titan for many year. There have been many publications on the subject. After all that talk it's a pity they didn't actually install the equipment to detect them.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    12. Re:So there's this feature... by exp(pi*sqrt(163)) · · Score: 1
      I think it's pretty obviuos that they chose the right equipment.
      Because it's obvious that something that could detect liquid would have absolutely no other uses whatsoever. Right.

      If you have an easy answer, I'm sure NASA would LOVE to hear it
      Various forms of radar. It works. I don't need to tell NASA or JPL about it.
      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    13. Re:So there's this feature... by m50d · · Score: 1

      The point is they *can* tell if it's a lake. If the sun-glinting method works, sure it might seem a bit goofy, but it frees up mass to use with other instruments.

      --
      I am trolling
    14. Re:So there's this feature... by InfiniteWisdom · · Score: 1

      That's because until Cassini got there, they had no idea what the surface was like because of thick clouds. If Huygens had landed in the lake, it would have been blazingly obvious whether it's liquid or solid. Trying to determine that from orbit is an entirely different matter.

      So maybe I was wrong in that finding *liquid* was not something they hadn't fully expected, but Cassini was never designed to determine whether any part of the surface was liquid or solid.

    15. Re:So there's this feature... by exp(pi*sqrt(163)) · · Score: 1

      Personally I think they could have started with dumping the microphone designed to listen for thunder :-)

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    16. Re:So there's this feature... by pedroloco · · Score: 1

      One of the challenges of studying Titan is that is has a *massive* atmosphere with lots of haze due to the presence of hydrocarbons. Most of the images of Titan's surface are actually in the near-infrared where the haze is less optically thick (i.e. you can see through more atmosphere), but the haze still degrades the images. A camera with higher spatial resolution would simply take higher resolution images of haze. (You can test this out yourself by taking pictures on a really foggy day with a 3 Mpixel and a 6 Mpixel camera.)

      I also take issue with your claim that Cassini is carrying the wrong sets of instruments to determine whether or not this is a lake. The article concentrates on the results from the camera. However, Cassini also carries a radar imager which can determine the roughness of the surface. A large body of water with little wave action will appear as a smooth surface. If this "lake" appears smooth in radar images, then that would would lend further support to the lake hypothesis.

      It's a shame the camera and radar dish face different directions on Cassini, so simultaneous observations can't be made with those instruments. However, I wouldn't be surprised if the radar was pointed at the "lake" during a future flyby.

    17. Re:So there's this feature... by Anonymous Coward · · Score: 0

      the sun glinting doesn't tell you it is a lake or even liquid, it just tells you it is a smooth surface

    18. Re:So there's this feature... by exp(pi*sqrt(163)) · · Score: 1

      There have already been radar sweeps over Titan and I'm sure there were reports of interestingly smooth surfaces. But it's still hard to tell whether these represent a liquid surface or something produced by some other mechanism. With the right radar it would be possible to probe under the surface and determine a wealth of information from the radar reflectivity at different types of boundary eg. between atmosphere and 'lake', lake and lake bed and so on. This can tell you a ton of information about geometry and also give you good clues as to the chemical composition. I don't know the details of Cassini's radar but I'm pretty sure it's only useful for measuring the surface reflectivity and altitude.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
  15. Re:Tough troll by daniil · · Score: 4, Funny
    You're weak, dude. Let me show you how it's done:

    A few weeks ago, a lake mysteriously went missing in Russia. Back then, many people suspected that the lake had gotten fed up with the villagers throwing garbage into it, and just walked away. I guess we now know where it went :7

    --
    Man is a slave because freedom is difficult, whereas slavery is easy.
  16. That's no lake! by Anonymous Coward · · Score: 0

    The empire is building a mega-Olympic-size Sith bath.

    1. Re:That's no lake! by Anonymous Coward · · Score: 0

      HA. 45 comments and no "that no moon" comments but yours is close enough.

  17. I, for one by JustADude · · Score: 1

    welcome our new Jovian methane lake-dwelling overlords. Seriously though, I wonder what (if any) implications this has for our knowedge of the other planets in the solar system...

    1. Re:I, for one by 1ivewire · · Score: 1

      Other than Saturn? The planet that Titan orbits. Or Jupiter? The planet implied by use of the word "Jovian".

    2. Re:I, for one by JustADude · · Score: 1

      Oops, I probably should have RTFA again... meh.

      Saturnian?

    3. Re:I, for one by EccentricAnomaly · · Score: 1

      Cronic :)

      --
      There are 10 types of people in this world, those who can count in binary and those who can't.
    4. Re:I, for one by sdsichero · · Score: 1

      Could be that's where Armus is hanging out... Send down your security officers first!

    5. Re:I, for one by whitehatlurker · · Score: 1

      I for one welcome our new Titanic overlords and am more than willing to rat out those who mistake them for Jovians.

      --
      .. paranoid crackpot leftover from the days of Amiga.
    6. Re:I, for one by EccentricAnomaly · · Score: 1

      to clarify... Jupiter --> Jove --> Jovian. I propose Saturn --> Cronos --> Cronic, mostly because it sounds like Chronic, which is way better than Sess.

      --
      There are 10 types of people in this world, those who can count in binary and those who can't.
    7. Re:I, for one by 1ivewire · · Score: 1

      I don't think Saturn Ion is in common use. If it is, then God help us all.

    8. Re:I, for one by Tablizer · · Score: 1

      I, for one welcome our new Jovian methane lake-dwelling overlords.

      Here ya go:

      http://lightning.prohosting.com/~bjgeiger/doodles/ livingroom/Creature/c3.gif

  18. Any sign of any... by centauri · · Score: 2, Funny

    Sirens?

    --
    Don't blame me, I voted for Durga.
    1. Re:Any sign of any... by Anonymous Coward · · Score: 1

      No, but apparently some guy named Salo put in an extra long distance call from there to the AAA.

  19. The wrong set of instruments by Anonymous Coward · · Score: 2, Insightful

    I think they loaded up Cassini and Huygens with the wrong set of instruments.

    The instruments on Cassini and Huygens are revealing Titan as place worthy of much further exploration. I thought the reveal of a river bed like structure on an ice moon was worth the price of admission alone. Total success in my book, if nothing more these missions define what we might want to send in subsequent probes.

  20. Google Maps link??? by Anonymous Coward · · Score: 0

    well???

  21. That's no lake...! by HomerJayS · · Score: 1

    It's the main weapon of a space station.

  22. Ansari X-Treme Prize? by Vonotar82 · · Score: 1

    Allow me to be the first to propose extreme extraterrestrial sports. Hydrocarbon skiing, anyone? Synchronized searching for life forms? I don't know, but I'm sure MTV would cover it.

    --
    "I drank WHAT?!"--Socrates
  23. Lake spotted on Titan... by pinchhazard · · Score: 1

    ...mistaken for dalmation.

    --
    Do you love freedom??? Do you love freedom!!! DO YOU LOVE FREEDOM!!!!!!!!
  24. They JUST NOW found the lake by __aamcgs2220 · · Score: 1

    ...and Larry Ellison is ALREADY having a 250-foot yacht built for racing there. True to form, though, shortsighted Larry demanded the boat's engines run on propane, despite the fact that methane is plentiful, free, and technically superior.

  25. Conservation by coyote-san · · Score: 1

    The reason we shouldn't drain it today is because we'll have nothing tomorrow. Something every generation prior to ours has understood is that you don't eat your "seed corn."

    I don't know why we'll need these oil reserves in the future, just that it will undoubtably come in useful sometime during the next 10,000 years. It's extremely shortsighted to say that our needs to drive Hummers out to exburbs on 35-acre ranchettes because the relatively affluent don't want neighbors in an urban environment is more important.

    N.B., I'm not saying that we shouldn't use oil at all. Just that we act in a responsible manner instead of assuming that Jesus will be along any day now and we don't have to worry about things like this.

    --
    For every complex problem there is an answer that is clear, simple, and wrong. -- H L Mencken
  26. Look in the volcano by EccentricAnomaly · · Score: 5, Informative

    Sunlight breaks down methane, so to have it in Titan's atmosphere (particularly at such high levels) it has to be continually replaced. You can make methane on Titan via either life or some sort of weird chemical process. So the methane is a hint at possible life.

    Titan's atmosphere is also full of a haze of complex organic molecules that continually rain down on the surface... leaving deposits of hydrocarbons on the surface hundreds of meters thick.

    Now if only these complex organics could get mixed in with water. (And it has to be water, because you need the oxygen). Guess what 'rocks' on Titan are made out of :)

    So you might have something happening in this methane lake with methane being the liquid and oxygen coming from ice... but this would be completely different from life as we know it...

    My own bet is on the volcano to look for life (The volcano on Titan erupts molten water). Also there might be life in Titan's mantle (it's made of liquid water + ammonia mixture).

    (This website: http://saturn.jpl.nasa.gov/multimedia/products/pro duct-presentations.cfm has lots of good inside information about the science results... the end of the "Titan: First Views of an Alien World" discusses where to look for life on Titan)

    --
    There are 10 types of people in this world, those who can count in binary and those who can't.
    1. Re:Look in the volcano by VHerring · · Score: 1

      Could you perhaps clarify what you mean by "molten water"? Isn't molten water just.... liquid water?

    2. Re:Look in the volcano by EccentricAnomaly · · Score: 1

      Could you perhaps clarify what you mean by "molten water"? Isn't molten water just.... liquid water?

      Yeah, but molten water sounds like lava. Cryovolcanos are cool - get it? cool :)

      --
      There are 10 types of people in this world, those who can count in binary and those who can't.
    3. Re:Look in the volcano by ninejaguar · · Score: 1
      life or some sort of weird chemical process

      Some days, you just can't tell the difference.

      = 9J =

  27. Interesting thought to ponder and discuss. by Heem · · Score: 2, Interesting

    So we are sending all these probes.. Mars and Titan for example.

    What if one of them returned images of cities, or villages, either deserted or actively inhabited. - What do you think would happen? Would there be a giant cover up? Or maybe a giant newsflash? Would those responsible for the probe just publically "forget" that they ever sent a probe there?

    --
    Don't Tread on Me
    1. Re:Interesting thought to ponder and discuss. by bmalia · · Score: 1

      it would be released in the media as proof of alien civilizations, then a day later it would be "proved to be a hoax".

      --
      There's no place like ~/
    2. Re:Interesting thought to ponder and discuss. by micromuncher · · Score: 1

      Its off topic bro...

      Choose your favorite fan fiction:
      - War of the Worlds
      - Mars Attacks
      - Contact
      - Red Planet ...

      By the by, the Seti project has discovered not one but a handful of interesting candidate signals. The results of this, and reobservation of one of the most interesting signals, was for the Seti group to totally downplay the news. As such, not many people know about it.

      I suspect the same thing for any find - a brief news bite that is downplayed by the experts and ordinary people focus on what they can relate to right-in-front-of-their-noses.

      --
      /\/\icro/\/\uncher
    3. Re:Interesting thought to ponder and discuss. by ShoobieRat · · Score: 1

      Most space probe missions have their data too widely spread across both public and government institutions for such an event to be "covered up." Plus the growth of public astronomy technology and abilities grows constantly, so it would only be a matter of time before someone outside of the "control" would find out.

  28. Re:Tough troll by Beardo+the+Bearded · · Score: 1

    That's pretty weak too.

    How about:

    "Maybe that enourmous dark crater is where all the fucking documentation in the [something] distro went!"

    or:

    "Looks like all the Linux geeks ejaculated in the same spot as part of a big circle-jerk of penguin love."

    Sprinkle with random links to wherever you want.

    --

    ---
    ECHELON is a government program to find words like bomb, jihad, plutonium, assassinate, and anarchy.
  29. Mod parent down by m50d · · Score: 1

    Parent is a troll or an idiot, since he appears to have forgotten which planets the moons he mentions are orbiting

    --
    I am trolling
  30. Can we handle the alternative? by Shivetya · · Score: 2, Interesting

    The reliance on fossil fuels does put limits on our energy expenditures. If we do succeed in producing fusion power cheaply we will have a new form of pollution; heat. Even if we move to non-polluting forms of energy production other than nuclear we will still be left with heat. In my opinion once you remove the spectre of visible pollution that we have with today's fossil plants many people will be hard convinced that there is any pollution left, after all its "green power".

    While we all can agree mankind affects his global environment we cannot agree to what extent he does. Everyday something new comes up that throws a wrench into every argument made pro and con. Understanding more about how other planets work may lead to better insights here.

    --
    * Winners compare their achievements to their goals, losers compare theirs to that of others.
  31. Cassini was never designed to determine whether any part of the surface was liquid or solid.
    Yes, that's my point. I wish it had been designed that way. It's also a task well within NASA's ability.
    --
    Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    1. Re:Yes by InfiniteWisdom · · Score: 1

      You're forgetting that when you're sending a probe to a distant planet, every kg costs millions of dollars, every instrument consumes power, every bit of complexity increases the chance of failure.

  32. no methane ice sheets either by EccentricAnomaly · · Score: 1

    What's significant about this was that it was initially hypothesized that since titan had a considerable atmosphere of methane and other hydrocarbons, that the surface of Titan was possibly covered in either a massive liquid methane ocean or a methane ice sheet. However once the Huygens probe landed, that hypothesis was disproved (the one about liquid methane on the surface).

    No methane ice sheet either.... Cassini's instruments (specifically VIMS I think) have shown that the surface is mostly water ice. Titan's surface is turning out to be pretty bizarre and defying any of the earlier notions of what it would be like.

    --
    There are 10 types of people in this world, those who can count in binary and those who can't.
    1. Re:no methane ice sheets either by htrp · · Score: 1

      yea.... i didn't remember if there was an ice sheet.

      if i remember correctly, titan's surface was some kinda permafrosted swamp mush of methane or something, at least where huygens landed.

    2. Re:no methane ice sheets either by EccentricAnomaly · · Score: 1

      I don't think they really understand what the surface is like at the landing site yet... or at least they haven't published anything yet. The original 'creme brulée' theory was wrong. It looks like the penetrator hit a pebble and knocked it to the side before penetrating the softer surface below the pebble.

      --
      There are 10 types of people in this world, those who can count in binary and those who can't.
  33. Hmmm... We're finding lakes on other moons by suitepotato · · Score: 1

    but we're unable to find where the icon images at /. are going.

    Okay, more practically, I'll wait to care about this for when they announce it as absolute, no way it is anything but. I want them to find these exotic weather systems with methane, propane, and so on, but I want them to be solid with the observations and calculations first and foremost. Anything else is just more glamorizing. I want it to finally be something you can put in a basic space science book and tell kids, yes, this is true.

    Like the aluminum and titanium content of lunar soil as opposed to cheese.

    --
    If my grammar and spelling are off, I am [distracted/tired/careless] (take your pick)
  34. Resort Condos on Titan by couch_warrior · · Score: 1

    Did anyone else notice the little village of resort condos just south and east of the lake on titan?

    I'm guessing the skiing is phenomenal with snow made from hydrocarbons (think frozen motor oil).

    Can I make reservations through expedia?

    --
    "Sic Semper Path of Least Resistance"
  35. Fill'er up! by HermanAB · · Score: 1

    So, is Titan an Inter Galactic Filling Station for Vogon space ships, or does it lack something - an oxidizer maybe?

    Could you fill up on Titan with methane fuel and on Saturn with oxigen?

    --
    Oh well, what the hell...
  36. I'd love to know what happens at the discussions by exp(pi*sqrt(163)) · · Score: 1

    Clearly there'll be many different groups - meteorologists, geologists, vulcanologists, xenobiologists and so on fighting for every gram of space. What finally gets installed is probably more a matter of departmental politics than anything else.

    --
    Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
  37. Yes but by Anonymous Coward · · Score: 0

    Yes, but did they spot the laser beams from the sharks living on it?

  38. News Flash: Titan's atmosphere wiped out by clem9796 · · Score: 2, Funny

    Huygens> Affirmative, parachute deployed.

    Cassini> Can you see anything down there yet?

    Huygens> Not really, it's pretty dark.

    Cassini> Turn on your flashlight.

    Huygens> Alright, taking it out... aw crap, I dropped it, not gettin that one back, I'm still at 10,000 meters.

    Cassini> Oh that sucks, what about your water proof matches? Says here in the manual that we should use them in case of emergency.

    Huygens> Well, it's better than sitting here in the dark... Taking them out, opening the box, I'll use two jus... *carrier terminated*

    Cassini> Huygens? Huygens respond. Come on back now. Uh, Houston.. we have a problem.

    --
    IANALOOA
  39. yer all dumb! by p_cyde · · Score: 1

    that ain't no lake, it's the 18th hole!

  40. my new hobby... by capnspanky · · Score: 1

    ... lake spotting

  41. Oh dear... by Anonymous Coward · · Score: 0

    Sorry, sorry everyone, oh jesus look what I've gone and done.

    Long story short I'm an engineer at NASA who worked on Cassini...and during one of our final routine checks prior to launch I accidentally sneezed all over it when while climbing a ladder. Unfortunately I had a particularily bad case of flu on the day...and unbeknown to me and my colleagues a rather nasty helping of mucus found its way onto Cassini's camera lense.

    So what your seeing here is sadly not a lake, or otherwise liquidy extraterrestial phenomenon...but a minescule amount of frozen saliva.

  42. Re:Tough troll by Anonymous Coward · · Score: 0

    "Looks like all the Linux geeks ejaculated in the same spot as part of a big circle-jerk of penguin love."

    I Like the second one.

    Does anyone have pictures? Always new Linux weenies were loosers.

    - Moomin

  43. Turtle? Elizabeth Turtle? by Anonymous Coward · · Score: 0

    Hey, Turtles know all about dried up lakes.

  44. Just dumb luck... by Anonymous Coward · · Score: 0

    They never would have spotted the lake if not for the clearly marked "No Fishing" sign...

  45. w00t by Anonymous Coward · · Score: 0

    [insert Uranus joke here] :P

  46. Incorrect by coopex · · Score: 1

    >When this vapourised mass evaporates into space in a vacuum, where does it go? Nowhere, so gravity drags it back, applying its heat back to the mass. Therefore there is no overall temperature change.

    The phase change from solid/liquid to gas is endothermic, so the overall temperature will cool. It's why you sweat, the evaporation of water cools you.

    --
    The road to hell is paved with good intentions.
    1. Re:Incorrect by drsquare · · Score: 1

      I'm afraid you're incorrect. Sweat cools you because the sweat molecules carry heat and leave the body. It is only endothermic if the vapour goes away. If it goes back, it brings the heat back.

  47. If it *is* a lake... by Zathras26 · · Score: 1

    ...how would it behave? Is liquid methane more viscous than water or less? What kind of splash/waves would you get compared to a regular water lake if, for example, you threw a rock into a liquid methane lake? Does Titan have tides, and if so, would they be strong enough to create the lake shore lapping effect we see with lakes here? Titan's gravity is a lot lower than Earth's, of course, so that would affect the methane's behavior, too... what would the differences be between the behavior of a methane lake on Titan and one here on Earth, assuming that, say, a lab were to create the proper conditions to allow a methane lake to exist stably on Earth?

  48. Too Hazy by Tablizer · · Score: 1

    The point is they *can* tell if it's a lake. If the sun-glinting method works, sure it might seem a bit goofy, but it frees up mass to use with other instruments.

    Titan is very hazy. Thus, there would probably not be a clear-cut "glint" even if there was a body of liquid. Cassini has to use a specially-designed filter to even see the surface. Surface features are almost entirely invisable without the filter.

  49. Life? by jvchamary · · Score: 1

    Bring on the slugs!

  50. WTF is a "sweat molecule"? by coopex · · Score: 1

    If sweat cools by eliminating heat with excreting water, why have we evolved the capability to sweat at all? Surely it would be simpler to just urinate, as well as not give any signs to predators though the odor later caused by bacteria.

    You can be in a closed room, sweat, and cool, because in evaporating, you lose 580cal/gm water though latent heat of vaporization, while the specific heat of water is a paltry 1cal/gm-C by comparison. The heat remains, "trapped" in the evaporated sweat.

    --
    The road to hell is paved with good intentions.