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How Water Forms in Interstellar Space at 10K

KentuckyFC writes "Water is the most abundant solid material in space. But although astronomers see it on planets, moons, in comets and in interstellar clouds, nobody has been able to show how it forms. In theory, it should form easily when oxygen and atomic hydrogen meet. The problem is that there is not enough of it floating around as gas in interstellar dust clouds. So instead, the thinking is that water must form when atomic hydrogen interacts with frozen solid oxygen on the surface of dust grains in these clouds. Now Japanese astronomers have demonstrated this process for the first time in the lab in conditions that simulate interstellar space. That's cool because all the water in the solar system, including almost every drop you drink on Earth today, must have formed in exactly this way more than 5 billion years ago in a pre-solar dustcloud (abstract)."

17 of 270 comments (clear)

  1. Re:Am I the only person? by gardyloo · · Score: 4, Informative

    Note that the "K" you mention in the article is always capitalized, and, yes, it's standard nomenclature to use a postfixed "K" to represent Kelvins.

  2. Re:Am I the only person? by bunratty · · Score: 4, Informative

    10K means 10 Kelvins, that is, 10 degrees Celsius above absolute zero. It's not degrees Kelvin. 10k would be 10000 of something that is either unitless or of units that are not given.

    --
    What a fool believes, he sees, no wise man has the power to reason away.
  3. Re:5 billion years ago ? by ShieldW0lf · · Score: 4, Insightful

    The more we learn, the more obvious it becomes that life, far from being a unique or rare thing in the universe, is actually an inevitable natural process, and will consistently and repeatedly erupt under environmental conditions that are actually very common across the universe.

    --
    -1 Uncomfortable Truth
  4. Must it? by pla · · Score: 4, Insightful

    That's cool because all the water in the solar system, including almost every drop you drink on Earth today, must have formed in exactly this way more than 5 billion years ago in a pre-solar dustcloud

    Why must it? Could you justify that statement?

    Gravity alone tends to cause interstellar clouds to collapse into stellar accretion disks, and then into stars and planets.

    Although the Hydrogen and Oxygen in the original cloud may have had almost zero chance of getting together, once the cloud collapsed into relatively dense planetary atmospheres, why couldn't water have formed then?

  5. Re:Am I the only person? by Ferzerp · · Score: 4, Funny

    I think this is just an evil plot to get us all downmodded -1 redundant ;)

    We all replied with the same thing within seconds of one another.

    The parent of your post knew the answer, and knew we'd all correct him at the same time!

  6. Comment removed by account_deleted · · Score: 4, Insightful

    Comment removed based on user account deletion

  7. That explains it by cmacb · · Score: 4, Funny

    I knew my tap water tasted funny.

  8. Re:And the next question will be.... by $RANDOMLUSER · · Score: 5, Informative

    Yes. All (OK, for the pendants, MOST OF) the post-hydrogen elements come from stellar fusion. In oxygen's case, from helium fusion.

    --
    No folly is more costly than the folly of intolerant idealism. - Winston Churchill
  9. How water forms by suso · · Score: 5, Funny

    You don't have to try it figure it out. God just creates it. No scientific explaination needed. Now wasn't that easy.

  10. Sure looks that way by tjstork · · Score: 4, Informative

    Why must it? Could you justify that statement?

    The problem is that the Earth doesn't have sufficient gravity to hold free hydrogen. Free hydrogen on earth goes by by into space. So that almost automatically rules out any free hydrogen / oxygen hypothesis... or at least renders it less likely.

    Now, so, maybe there is some sort of hydrogen compound and some sort of oxygen compound that could react on earth to form water. Well, then, you'd have to ask, where's the traces of those reactions occuring, and, are there any minerals out there today that support those conclusions. Right now, you can find oxygen in just about any good old mineral, but hydrogen, I think that's an entirely different mater. I'm not a geologist, but I'm pretty sure that the only hydrogens we find on earth are from organic compounds, and they get it from a reaction that ultimately originates with water as one of the reagents.

    Now, that is of course based on a geological understanding that goes maybe at most a mile or two into the earth's crust. There could be some sort of something in the mantle where, ahah, there is a ton of hydrogen... you know, like water is formed from some hydrogen bearing rock mixing with some oxygen bearing rock inside the earth and shoots up out of a volcano. IF you could somehow find a set of candidate rocks and then make a good case for it, inside the earth, consistent with what we already know from the geological record about how the earth was formed, then yeah, you'd probably refute the underlying assumption of these japanese scientists and be some kind of a hero.

    But you'd be a bigger hero than that... because, if you actually could find a non-organic source of hydrogen on the earth you'd be a huge hero, because you would have discovered a fairly green non-fossil fuel. Good luck with that!

    --
    This is my sig.
    1. Re:Sure looks that way by Planesdragon · · Score: 4, Interesting

      The problem is that the Earth doesn't have sufficient gravity to hold free hydrogen What are you talking about?

      Sure, hydrogen released at sea level will rise to the outer surface of the atmosphere. But that's only because it's the least dense gas in existence, and all the other heavier gases push it up due their own higher gravity. Eventually, the hydrogen would reach a point where the pull of gravity and the "push" of the rest of the atmosphere would even out.

      Some hydrogen will get away due to thermal escape (an individual molecule moving fast enough to have escape velocity), but the earth will also collect some hydrogen due to the solar wind and its ordinary passage through space.

      I wager that the 1ppm we have of atmospheric hydrogen is a few orders of magnitude greater than the atomic hydrogen present in the vacuum of space -- even if we disregard the amount of hydrogen that has bonded with oxygen in our little dust-ball.
  11. Re:5 billion years ago ? by Dog-Cow · · Score: 4, Insightful

    A better question is when will people realize that the Bible never specifies the date of creation. Only idiots take the story literally.

  12. both scenarios are true by circletimessquare · · Score: 4, Funny

    but the interstellar dustcloud waterchild concept wins hollywood glamor points, while your more reasonable point of view is mundane and humdrum

    it is a facet of scientific theory formation known as michael bayification: the more dramatic and trippy the theory, the more likely it is to spread in the popular press, and therefore to gain more traction in the minds of the average joe

    "5 billion interstellar dustcloud water" is just so cool sounding man. while your point of view is full of zzz

    so c'mon, get with the program, your ideas are just so drab. perhaps if you redescribed your theory as it would appear being mumbled by a secret military organization figurehead in a big budget disaster movie. make believe you are a 23 year old hollywood script writer perusing wikipedia in forming your scientific mumbo jumbo

    repeat after me: "hyperplanetary accretion disc catalysis"

    or "gravity well coupled reverse electrolysis"

    there you go, now we are playing in the big leagues of science-theory-by-public-relations-ad-copy-writer

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  13. Re:5 billion years ago ? by TheMeuge · · Score: 4, Funny

    So far we have ONLY found life on one planet-- a planet that has liquid water, a single moon relatively large compared to the planet's mass, active volcanic and tectonic activity, a strong magnetosphere, and an active weather system.

    While we have theorized that not all of those are needed, the truth is that we haven't found so much as a single primitive cell anywhere else. And we haven't found one single location in the entire universe with all five save for our home planet. You sound like a seasoned explorer of space, who has spent countless years braving the depths of interstellar space, visited hundreds of remote star systems, only to be faced with disappointment time after time.

    I really feel for you.

    /sarcasm

    The kind of a claim you're making is even more of a hyperbole than claiming that there are no mexicans working in the kitchens of New York City restaurants, because you haven't seen one in Dubai.
  14. Re:If that is true by spun · · Score: 4, Interesting

    I do not give in to terrorists. Someone who loved me wouldn't send me to eternal punishment for finite transgressions. An infinite and all powerful creator God can not desire anything, for being all powerful and infinite they have everything they could want before they want it.

    I'm not an Atheist, I'm Agnostic. It's just that, if the Christians are correct out of all the myriad beliefs, I would rather go to hell than submit to an insane terrorist God, which is what the God of the Christians looks like to me, from their own description of him.

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
  15. atheist? by Animaether · · Score: 4, Interesting

    I'm curious - why must he be an atheist if he rejects the idea of a God that would leave people in an apparent state of deception (from GP poster's point of view)?

    He could just as easily believe in a different God, or multiple Gods, or etc. which to him/her is truthful in every way.

    Or he could be agnostic, saying that there may very well be a God, or multiple gods, but that he doesn't believe that the God described in OP is the kind of God he would choose to believe in.

    --

    As for the 26 words... I know human beings more benevolent and loving like that. I, for one, don't need the love of a random stranger in order for me to help them in any which way I can if I concern myself with their person. Put differently, from the perspective of somebody who were not to believe in 'God', what would 'God' have done for them that would have him deserve their love? On the up side - those who don't believe in God typically don't believe in Hell and all that, and probably couldn't care less about what God thinks and demands, as it becomes a moot issue.

  16. Re:And the next question will be.... by kmcrober · · Score: 5, Funny

    Pedant, not pendant. A "pendant" is a piece of jewelry or some other hanging object. A "pedant" is the sort of person who corrects someone who mistakenly writes "pendant" when they mean "pedant."