Water has been found hidden within glass beads on the moon's surface, having been formed and trapped by the blazing-hot impacts of meteors.
at immense speeds. During the collision, the beads formed when silicate minerals were heated to scorching temperatures by the meteor's impact, melting and forming molten balls of glass-like material.
The paper's authors wrote:"A recent geochronological study of CE5 [Chang'e 5] impact glass beads has shown that they formed more or less continuously for the past 2 Gyr [2 billion years], with prominent peaks in formation ages at [around] 575 million years ago , 380 Ma, 68 Ma and 35 Ma." The study also found that water in the solar wind can take between one and 15 years to diffuse into the glass beads at temperatures of 360 Kelvin and that the beads are also capable of releasing the water into the environment. This, the authors say, may suggest that these beads are important in sustaining the lunar surface's water cycle.
"If we want to extract the water in impact glass beads for future lunar exploration, first we collect them, then boil them in an oven and cool the released water vapor. Finally, you will get some liquid water in a bottle," Sen Hu, a planetary geologist at the Chinese Academy of Sciences' Institute of Geology and Geophysics and a co-author of the paper, told Live Science.
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