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Moon may have water trapped under its surface: Study
The Moon may have huge reservoirs of water trapped under the surface in the form of volcanic \'glass beads\', which could be extracted and used by astronauts in future lunar colonies, scientists have found.
Washington: The Moon may have huge reservoirs of water trapped under the surface in the form of volcanic 'glass beads', which could be extracted and used by astronauts in future lunar colonies, scientists have found.
A new study of satellite data found that numerous volcanic deposits distributed across the surface of the Moon contain unusually high amounts of trapped water.
The finding of water in these ancient deposits, which are believed to consist of glass beads formed by the explosive eruption of magma coming from the deep lunar interior, bolsters the idea that the lunar mantle is surprisingly water-rich. Scientists had assumed for years that the interior of the Moon had been largely depleted of water and other volatile compounds.
In 2008, researchers detected trace amounts of water in some of the volcanic glass beads brought back to Earth from the Apollo 15 and 17 missions to the Moon. In 2011, further study of tiny crystalline formations within those beads revealed that they actually contain similar amounts of water as some basalts on Earth, suggesting that the Moon's mantle contains as much water as Earth's.
Scientists used orbital spectrometers to measure the light that bounces off a planetary surface. By looking at which wavelengths of light are absorbed or reflected by the surface, scientists can get an idea of which minerals and other compounds are present. Researchers looked at data from the Moon Mineralogy Mapper, an imaging spectrometer that flew aboard India's Chandrayaan-1 lunar orbiter.
They found evidence of water in nearly all of the large pyroclastic deposits that had been previously mapped across the Moon's surface, including deposits near the Apollo 15 and 17 landing sites where water-bearing glass bead samples were collected.
Water-rich deposits are spread across the lunar surface, which tells us that the water found in the Apollo samples is not a one-off, Milliken said. The idea that the interior of the Moon is water-rich could have implications for future lunar exploration.
The volcanic beads do not contain a lot of water - about 0.05 per cent by weight - but the deposits are large, and the water could potentially be extracted, researchers said.
