China’s Chang’e 5 lunar probe finds first on-site evidence of water on moon’s surface
2 years, 11 months ago

China’s Chang’e 5 lunar probe finds first on-site evidence of water on moon’s surface

The Hindu  

China’s Chang’e 5 lunar lander has found the first-ever on-site evidence of water on the surface of the moon, lending new evidence to the dryness of the satellite. The study published on Saturday in the peer-reviewed journal Science Advances revealed that the lunar soil at the landing site contains less than 120 parts-per-million water or 120 grams water per ton, and a light, vesicular rock carries 180 ppm, which are much drier than that on Earth. A device on-board the lunar lander measured the spectral reflectance of the regolith and the rock and detected water on the spot for the first time. The water content can be estimated since the water molecule or hydroxyl absorbs at a frequency of about three micrometers, the state-run Xinhua news agency reported, citing researchers from the Chinese Academy of Sciences.

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