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NASA discovers that the Moon is much wetter than we thought


August 29, 2013

Recent findings suggest the Moon contains underground reservoirs of magmatic water (Image: NASA)

Recent findings suggest the Moon contains underground reservoirs of magmatic water (Image: NASA)

Image Gallery (6 images)

Data from NASA's Moon Mineralogy Mapper (M3) aboard the Indian Chandrayaan-1 probe has shown that there is water locked in mineral grains on the surface on our satellite's surface. Scientists had previously thought that the small amounts of moisture they could detect were all being generated by solar wind and other external factors, but the latest findings are strong evidence that the Moon contains large quantities of its own "magmatic water" from deep within its core.

While the Moon is traditionally thought as a bone-dry place, the evidence for water on its surface has been piling up for decades, although it has been dismissed multiple times.

Four decades ago, the rock samples brought back to Earth by the Apollo astronauts were shown to contain surface water. However, it was assumed that the samples had been contaminated by human handling, and the results were dismissed.

In 2009 NASA's M3 module in the Indian Chandrayaan-1 probe found water near the poles as it mapped the Moon's surface, but this moisture was assumed to be caused by solar winds. Charged particles from the Sun can create thin layers of water molecules on impact, and scientists believed that the small quantity of water that was found could be justified in that way.

Solar winds are known to cause a thin layer of water to accumulate on the surface by the Moon's poles (Image: University of Maryland/F. Merlin/McREL)

Later on in the same year, NASA smashed an impactor into the Cabeus Crater to study the materials that were thrown up in the resulting plume. When they found water vapor and ice particles, they again attributed the findings to the action of solar wind, or possibly to the comet whose impact had formed the Cabeus Crater in the first place.

But the latest results can be hardly equivocated as brought on by human error, solar winds or comets, indicating instead that the Moon contains its own reservoirs of water deep underground (although we don't yet know how they may have gotten there).

NASA's M3 instrument imaged a 37-mile (60-km) wide impact crater called Bullialdus. Unlike previous experiments, this crater is closer to the lunar equator, where scientists believe water from solar winds can't survive on the surface.

Bullialdus's impact crater was so deep that it exposed some of the Moon's magmatic rock. When NASA went about analyzing the crater from orbit, it found something unexpected.

NASA first discovered signs of water in 2009, but they were soon dismissed (Image: NASA)

NASA found that the central portion of the crater contains large amounts of hydroxyl (a molecule made up of one oxygen atom and a hydrogen atom). This is evidence that the rocks in the crater contain water that originated from beneath the surface, which researchers call "magmatic water."

Scientists will now start to compare this water with other characteristics of the lunar surface to learn more about the Moon's internal composition and its volcanic activity evolved as it cooled down to today's temperatures.

The finding also suggests that polar craters could contain more water ice than previously thought. In fact, they could be in large enough quantities that using it as a green propellant to fuel rockets could become a possibility.

A paper on the subject appears in the journal Nature Geoscience.

Source: Space.com

About the Author
Dario Borghino Dario studied software engineering at the Polytechnic University of Turin. When he isn't writing for Gizmag he is usually traveling the world on a whim, working on an AI-guided automated trading system, or chasing his dream to become the next European thumbwrestling champion. All articles by Dario Borghino

Thanks India! This is good news for all of us.

Seth Miesters

It says bad things about the scientists at NASA that this is a surprise. Ignoring evidence that does not fit your preconceived notions is not science.


It could also mean that NASA confirms something they already knew for years. There is no reason not to, now that other countries have openly announced the findings. You would never know.


Surprise! More dogma @ccording to the fossilized M. Slowburn: Science means never having preconceptions and never taking time to weigh new evidence. (Ergo, of course, there's no climate change, which is somehow always his bottom line. Blah, blah, blah ... No more Hannity for you, Slo.)

Fritz Menzel

@ Anon.2013 NASA is not suppose to be keeping that sort of thing secret. So that would still be "Bad NASA". and a wack across the nose with a loosely rolled newspaper.


This just shows that the Moon has so much more potential than anyone was willing to admit . Very cool , that moonbase idea is becoming better and better .

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