This is epic news

Quote :

"Since man first touched the moon and brought pieces of it back to Earth, scientists have thought that the lunar surface was bone dry. But new observations from three different spacecraft have put this notion to rest with what has been called "unambiguous evidence" of water across the surface of the moon. The new findings, detailed in the Sept. 25 issue of the journal Science, come in the wake of further evidence of lunar polar water ice by NASA's Lunar Reconnaissance Orbiter and just weeks before the planned lunar impact of NASA's LCROSS satellite, which will hit one of the permanently shadowed craters at the moon's south pole in hope of churning up evidence of water ice deposits in the debris field. The moon remains drier than any desert on Earth, but the water is said to exist on the moon in very small quantities. One ton of the top layer of the lunar surface would hold about 32 ounces of water, researchers said. "If the water molecules are as mobile as we think they are — even a fraction of them — they provide a mechanism for getting water to those permanently shadowed craters," said planetary geologist Carle Pieters of Brown University in Rhode Island, who led one of the three studies in Science on the lunar find, in a statement. "This opens a whole new avenue [of lunar research], but we have to understand the physics of it to utilize it." Finding water on the moon would be a boon to possible future lunar bases, acting as a potential source of drinking water and fuel. Apollo turns up dry When Apollo astronauts returned from the moon 40 years ago, they brought back several samples of lunar rocks. The moon rocks were analyzed for signs of water bound to minerals present in the rocks; while trace amounts of water were detected, these were assumed to be contamination from Earth, because the containers the rocks came back in had leaked. "The isotopes of oxygen that exist on the moon are the same as those that exist on Earth, so it was difficult if not impossible to tell the difference between water from the moon and water from Earth," said Larry Taylor of the University of Tennessee, Knoxville, who is a member of one of the NASA-built instrument teams for India's Chandrayaan-1 satellite and has studied the moon since the Apollo missions. While scientists continued to suspect that water ice deposits could be found in the coldest spots of south pole craters that never saw sunlight, the consensus became that the rest of the moon was bone dry. But new observations of the lunar surface made with Chandrayaan-1, NASA's Cassini spacecraft, and NASA's Deep Impact probe, are calling that consensus into question, with multiple detections of the spectral signal of either water or the hydroxyl group (an oxygen and hydrogen chemically bonded). Three spacecraft Chandrayaan-1, India's first-ever moon probe, was aimed at mapping the lunar surface and determining its mineral composition (the orbiter's mission ended 14 months prematurely in August after an abrupt malfunction). While the probe was still active, its NASA-built Moon Mineralogy Mapper (M3) detected wavelengths of light reflected off the surface that indicated the chemical bond between hydrogen and oxygen — the telltale sign of either water or hydroxyl. Because M3 can only penetrate the top few millimeters of lunar regolith, the newly observed water seems to be at or near the lunar surface. M3's observations also showed that the water signal got stronger toward the polar regions. Pieters is the lead investigator for the M3 instrument on Chandrayaan-1. Cassini, which passed by the moon in 1999 on its way to Saturn, provides confirmation of this signal with its own slightly stronger detection of the water/hydroxyl signal. The water would have to be absorbed or trapped in the glass and minerals at the lunar surface, wrote Roger Clark of the U.S. Geological Survey in the study detailing Cassini's findings. The Cassini data shows a global distribution of the water signal, though it also appears stronger near the poles (and low in the lunar maria). Finally, the Deep Impact spacecraft, as part of its extended EPOXI mission and at the request of the M3 team, made infrared detections of water and hydroxyl as part of a calibration exercise during several close approaches of the Earth-Moon system en route to its planned flyby of comet 103P/Hartley 2 in November 2010. Deep Impact detected the signal at all latitudes above 10 degrees N, though once again, the poles showed the strongest signals. With its multiple passes, Deep Impact was able to observe the same regions at different times of the lunar day. At noon, when the sun's rays were strongest, the water feature was lowest, while in the morning, the feature was stronger. "The Deep Impact observations of the Moon not only unequivocally confirm the presence of [water/hydroxyl] on the lunar surface, but also reveal that the entire lunar surface is hydrated during at least some portion of the lunar day," the authors wrote in their study. The findings of all three spacecraft "provide unambiguous evidence for the presence of hydroxyl or water," said Paul Lucey of the University of Hawaii in an opinion essay accompanying the three studies. Lucey was not involved in any of the missions. The new data "prompt a critical reexamination of the notion that the moon is dry. It is not," Lucey wrote. Where the water comes from Combined, the findings show that not only is the moon hydrated, the process that makes it so is a dynamic one that is driven by the daily changes in solar radiation hitting any given spot on the surface. The sun might also have something to do with how the water got there. There are potentially two types of water on the moon: that brought from outside sources, such as water-bearing comets striking the surface, or that that originates on the moon. This second, endogenic, source is thought to possibly come from the interaction of the solar wind with moon rocks and soils. The rocks and regolith that make up the lunar surface are about 45 percent oxygen (combined with other elements as mostly silicate minerals). The solar wind — the constant stream of charged particles emitted by the sun — are mostly protons, or positively charged hydrogen atoms. If the charged hydrogens, which are traveling at one-third the speed of light, hit the lunar surface with enough force, they break apart oxygen bonds in soil materials, Taylor, the M3 team member suspects. Where free oxygen and hydrogen exist, there is a high chance that trace amounts of water will form. The various study researchers also suggest that the daily dehydration and rehydration of the trace water across the surface could lead to the migration of hydroxyl and hydrogen towards the poles where it can accumulate in the cold traps of the permanently shadowed regions."

http://www.space.com/scienceastronomy/090923-moon-water-discovery.html

9/24/2009 10:56:54 AM

How did the US not find this?

9/24/2009 11:01:13 AM

SWEET!

9/24/2009 11:06:47 AM

9/24/2009 11:42:59 AM

will i have to boil it before I drink it?

9/24/2009 12:22:18 PM

whoop-de-do

why is this epic news?

9/24/2009 12:44:35 PM

Because with water on the moon they'll be able to build a base and keep people there for extended periods of time. They'll just need to move one ton of dirt to extract enough water every time they want to fill their big gulps is all.

[Edited on September 24, 2009 at 1:42 PM. Reason : -]

9/24/2009 1:40:21 PM

Water = Potential for life = Orgasm for NASA.

9/24/2009 1:46:41 PM

The real question is how will they stop people on any moonbase from going crazy and becoming homicidal, which is what happens to all people and computers who stay in space for any extended period of time?

9/24/2009 1:46:54 PM

^people already stay in space for an extended period of time on the international space station. (and yes i know you were being funny)

9/24/2009 1:51:54 PM

in this situation funny=stupid

9/24/2009 1:53:38 PM

So if we get internet on the moon, the latency will be bad. Like 1.5 seconds.

9/24/2009 2:02:35 PM

Well assuming there is 32 oz of water in every ton of moon and that this is true for entire moon (idk but that's a bad assumption I'm sure), that would imply that there could be 3,000 times more water on the moon than found in the all the great lakes.

The real question is when will I get to buy an overpriced bottle of moonwater?

9/24/2009 2:05:50 PM

Moonwater for sale, PM me.

9/24/2009 2:09:10 PM

What about moon cheese? I know its really made out of cheese. It has to be. Since we can't farm on the moon, we can just eat it.

9/24/2009 2:15:15 PM

Quote :

"Because with water on the moon they'll be able to build a base and keep people there for extended periods of time. They'll just need to move one ton of dirt to extract enough water every time they want to fill their big gulps is all. "

a ton of dirt isn't all that much. i don't know the density of moon dirt, but assuming 100 pcf, 1 ton is only 20 cubic feet (4' x 5' x 1')...

right?

9/24/2009 2:18:09 PM

Guantanamo to move to the moon in 2020!

9/24/2009 2:19:19 PM

I'm not sure what the chemical composition of moon dirt is (please correct me if I'm wrong) but I don't think it could support plant life. Regardless though, moving that much Earth dirt to the moon really isn't that big of an issue. And also keep in mind that this is only initial observations of water on the moon... there could be a lot more elsewhere (and also a lot less). Regardless, it makes a permanent human outpost on the moon a lot easier, cheaper, and more realistic. Let's just hope that the people who go there don't end up like this guy:

9/24/2009 2:31:59 PM

Do Moon people buy bottled water?

9/25/2009 4:15:47 PM

Aerosmith now works for NASA and teaches a moon class, which he says, "Walk this way" and points to a Michael Jackson music video.

9/25/2009 4:34:18 PM

Quote :

"a ton of dirt isn't all that much. i don't know the density of moon dirt, but assuming 100 pcf, 1 ton is only 20 cubic feet (4' x 5' x 1')... right?"

It depends but you have a good starting place. It depends on the gradation of the soil and the chemical make up. It would be more cost effective to transport water and nutrients up to the moon rather than soil.

Pure silts and clays will have dry unit weights under 100 pcf.
Clean sands will have dry unit weights around 100 pcf.
A blend of sand and fines will yield dry unit weights above 110 pcf.

In soil, the water content is defined as the (weight of water/weight of dry soil)x100%. The water content of the moon soil seems to be 0.1%. Soil also has a natural water content that it remains at no matter what is going on on the surface of the earth. Around here the natural water content ranges between about 5% to 15% depending on the soil. Natural water content in deserts probably range from about 1% to 3%.

9/25/2009 4:52:05 PM

MORE PROOF IT WAS A CONSPIRACY

9/25/2009 5:36:03 PM