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NASA Explores the Moon's Water/Oxygen Deposits

destinyland writes "NASA's LCross mission will now test whether the moon's hydrogen and oxygen deposits could be converted into air, water, and even fuel. A dramatic crash by the rocket's upper stage will blast 200 tons of moon rock up 10 kilometers from a dark crater — where its constitution can be measured by LCross's instruments. (NASA predicts 'a number of different ways that we'll be able to create water from whatever form of lunar hydrogen we find' on the moon, noting recent missions have already confirmed the presence of oxygen in moon rocks, while the sun delivers a constant stream of hydrogen.) Carrying water to the moon costs $100,000 a kilogram, so these experiments could be a crucial step to getting more people on the moon."

20 of 73 comments (clear)

  1. blog by buchner.johannes · · Score: 4, Informative

    The mission has a blog (with feed) where they reported an anomaly two days ago.

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  2. Get well soon by QuantumG · · Score: 4, Informative

    LCROSS had some issues last weekend which caused it to lose a good portion of its fuel. The mission is down to the wire and may not make it. If it does, it will be because of the skill and dedication of the NASA team.

    The data they collect from the impact, from LRO, earth and space telescopes and LCROSS itself, will provide the missing piece of the puzzle for Lunar ISRU. Up until now, the promise of ice on the Moon has been a distant "yeah, we'll do that one day" proposition, but with this data NASA will finally be able to do study on what kinda of equipment will be required to process the ice and produce potable water, oxygen and rocket fuel (most likely methane) and that will drive the design of Lunar exploration systems.

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    1. Re:Get well soon by R3d+M3rcury · · Score: 2, Informative

      [...] what kinda of equipment will be required to process the ice and produce potable water, oxygen and rocket fuel [...]

      One interesting thing mentioned in the article is that they can already produce oxygen from lunar minerals. The sun is sending a nice stream of hydrogen via the solar winds. This can be combined to produce potable water without having to process any ice whatsoever.

      The question is whether it would "better" to melt the ice and filter it into something drinkable or to make the water from hydrogen and oxygen.

    2. Re:Get well soon by QuantumG · · Score: 3, Insightful

      That's true, but there's a consensus that processing ice will be much easier than processing regolith.. the question remains, is it really ice? And how pure is it? Is it mixed with regolith? Even in those worst situations it'll likely still be easier to purify dirty snow than melt regolith in solar furnaces. The important thing is, different materials require different strategies and that means different equipment.. they have to design everything and be 95% sure it'll work before sending it up.

      On the other hand, virtually no-one is talking about scouting for high purity metals (say, from asteroid impacts) and the ease at which processing those ores would be compared to processing common regolith. It's not that the payoff is less, it's just that this kind of far off vision is stigmatized and if you want to keep getting funding you have to reign in your enthusiasm.
       

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    3. Re:Get well soon by Rei · · Score: 3, Informative

      The thing is, so far, we haven't found ice. Or any relevant quantities of hydrogen in any form. The concept of harvesting hydrogen from the solar wind seems silly; the solar wind at 1AU averages about 4 atoms per cubic centimeter. At an average 350km/s speed, this means a collector could gather no more than 0.7 milligrams per square meter per year. At 100% efficiency with no celestial shielding of the solar wind of any kind and with a heliostat. And not all of that would be hydrogen.

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    4. Re:Get well soon by DerekLyons · · Score: 3, Informative

      One interesting thing mentioned in the article is that they can already produce oxygen from lunar minerals. The sun is sending a nice stream of hydrogen via the solar winds. This can be combined to produce potable water without having to process any ice whatsoever.

      Keep in mind that the "steady stream of hydrogen" amounts to a few pounds a year scattered across the entire lunar surface. Worse yet, AIUI, it doesn't stay on the surface long - it out gasses.

  3. Cost of Water by Linker3000 · · Score: 3, Funny

    "Carrying water to the moon costs $100,000 a kilogram"

    Yes, that's what happens when you fly to the moon with Ryanair and buy your water onboard.

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  4. Re:3..2..1.. by ZackSchil · · Score: 2, Funny

    We have the technology. The time is now. Science can wait no longer. Children are our future. American can, should, must, and will blow up the moon.

    http://www.youtube.com/watch?v=Csj7vMKy4EI

  5. Costs? by hardburn · · Score: 2, Funny

    What costs more to get to the moon? A kg of water, or a kg of feathers?

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    1. Re:Costs? by jfdawes · · Score: 4, Funny

      Given that feathers are much less dense than water, everything else being equal it would cost more to get the feathers there since they enclosure required to contain them would be larger than the enclosure required to contain water.

      Things not being equal, feathers are far more compressible than water so you could perhaps increase their density substantially.

      You don't specify what condition you want the feathers in. It might be possible to just glue them to the outside of the craft, in which case there are no associated container requirements whereas the water must still be contained. In this case it's going to cost more to get the water there.

      On the other hand, if the water was already in orbit it would be as ice, in which case you might be able to just glue a chunk of that to the outside of the craft.

      If we're gluing random chunks of stuff to the outside of spaceships, it's probably going to come down to how much friction each material causes and what loss of material each substance would undergo due to space friction.

      HTH

    2. Re:Costs? by ceoyoyo · · Score: 2, Interesting

      "With serious rationing, humans can live on as little as 3 or so liters a day"

      On sea kayaking trips, where there isn't any fresh water, we usually bring about two litres a day, and that leaves a comfortable safety factor. That doesn't include showering, but it IS perfectly possible to have a sponge bath in less than half a litre, and people used to get along perfectly well having VERY infrequent baths.

      The recommended daily intake of drinking water is around 1-2 L/day for women and 2-3 L/day for men. With "serious rationing," and living and working in a controlled environment you could cut that down by at least half.

      Yeah, it's nice to have 100 L a day to flush toilets and take showers, but it's not really required.

  6. Re:3..2..1.. by ZackSchil · · Score: 3, Funny

    We're spending so much money, millions of dollars to blow up the moon when there's so much right here on earth to blow up. Mount Everest, the north pole, et cetera. We're earthlings, let's blow up earth things.

    WE'RE EARTHLINGS, LET'S BLOW UP EARTH THINGS!

    WE'RE EARTHLINGS, LET'S BLOW UP EARTH THINGS!

  7. Sweet... by secretplans · · Score: 2, Funny

    We're bombing the moon now.

    Did someone say something about fuel?

    Operation Spock and Awe.

  8. To the moon before Mars by antirelic · · Score: 3, Insightful

    I'm all for space travel (I think this is one of the few useful things a government agency does well), but like many people here have said many times before, we need to do it in ways that make sense and that we can build on. What started out with a quick dabble in LEO was slung shot to a space race to the moon. While some of the technology that came from that competition (mind you, many products were developed outside of the space program and adapted TO the space program where it became famous) has found great uses, the push to the moon did not yield much outside of the international political arena.

    With that said, there has been a correction. The nations of the earth have begun to utilize low earth orbit: satellites (for various uses). This is the number 1 use of LEO. As time goes on and people begin to find ways to exploit LEO there will be more challenges to face (advantages and disadvantages to be gained). This analysis of the moon shows us how far we have come and how far we have to go. The moon is close, and cheapest heavenly body to get to. If we cant put and maintain a base there, how can we expect to exploit asteroids or even attempt to wrestle with landing and take offs on other planets (for example: tag: gettomars).

    Every mistake made provides an opportunity to improve and do it again. Its best we learn (and we will learn many things) trying to land and establish outposts on the moon before we go any further, and this will likely be the case for the next several generations (unless some crazy breakthrough in physics occurs that results in easy and safe departure from the earths surface).

    Go NASA!

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    1. Re:To the moon before Mars by Kamokazi · · Score: 2, Funny

      unless some crazy breakthrough in physics occurs that results in easy and safe departure from the earths surface

      I think that is pretty much the key right there. It takes a tremendous amount of energy, calculation, and resources to life a tiny payload into space. We should be devoting more resources on cheaper and more economical ways to get into orbit...ie space elevators, assisted launch, etc. That makes it much easier to estabilsh space stations and you could construct spacecraft that rely on nuclear-based propulsion and launch them from these stations.

      And then you start colonies in space and on the moon, and eventually there is war between the colony inhabitants and Earth, and we build giant robots and let psychic 16-year-old kids pilot them and beat the crap out of eachother and save humanity from itself in the process. Until of course the remnants of the defeated faction finish rebuilding in the asteroid belt and come back to kick all our asses. But such is life. For anime characters living in space, anyway.

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  9. Importing water to the moon by rbanffy · · Score: 2, Interesting

    An interesting effect of not having water readily available on the moon could be the development of missions to icy moons to get the water required for a moon (or Mars) colony. The Moon is going to be important if we plan to be a space-faring civilization as it's the closest place to Earth that has the raw materials to build spacecraft coupled to a very rocket-friendly gravity well. I am not sure about fuels (nuclear fuels), but the rest looks promising.

    There are many nice places to collect water ice in the outer solar system and once you have a full tank of water collected you can use it as propellant in a nuclear-thermal rocket to get back to the Moon with still plenty left. It would be a bitch to do it with a fully automated and autonomous spacecraft, but, at least, it's conceivable. And even building the spacecraft itself should not be that hard if we can remission Ares-V (more likely an Ares XXVIII, considering the timeframes involved) main tanks for ferrying water back from out there. The spacecrafts would end-up being small when compared to their tanks.

    1. Re:Importing water to the moon by melf-san · · Score: 2, Informative

      I am not sure about fuels (nuclear fuels), but the rest looks promising.

      Uranium has been found on moon: http://www.space.com/scienceastronomy/090629-uranium-moon.html

  10. Sigh by ShooterNeo · · Score: 2, Interesting

    What are they thinking?

    Before they can think about a moon base, maybe they should fix the problem of getting into orbit in the first place. Right now, the current implementation is not a solution. $10,000 or so a kilogram is stupidly expensive. It costs many millions of dollars to blast just one astronaut into space.

    1. Re:Sigh by QuantumG · · Score: 2, Informative

      It costs so much because its a government program. The design decisions that made the shuttle, and are now pushing the design of Constellation, were not about technology, they were about which congressional district the components would be manufactured in, how many government employees would be laid off, etc. Under those constraints I'm surprised NASA ever gets anything to fly.

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      How we know is more important than what we know.
  11. Re:Water on the moon + Earth drought = by psycho12345 · · Score: 2, Informative

    Or we could spend far less and build a ton of desalination plants... Plenty of water on this planet (just not quite usable).