Beijing, Jan 9: 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 (ppm) water or 120 grams water per ton, and a light, vesicular rock carries 180 ppm, which are much drier than that on Earth.

The presence of water had been confirmed by remote observation but the lander has now detected signs of water in rocks and soil.

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 (CAS).

It was the solar wind that contributed to the most humidity of lunar soil as it brought hydrogen that makes up the water, the researchers said.

The additional 60 ppm water in the rock may originate from the lunar interior, according to the researchers.

Therefore, the rock is estimated to hail from an older, more humid basaltic unit before being ejected onto the landing site to be picked up by the lunar lander.

The study revealed that the moon had turned drier within a certain period, owing probably to the degassing of its mantle reservoir.

The Chang'e-5 spacecraft landed on one of the youngest mare basalts located at a mid-high latitude on the moon. It measured water on the spot and retrieved samples weighing 1,731 grams.

"The returned samples are a mixture of granules both on the surface and beneath. But an in-situ probe can measure the outermost layer of the lunar surface," Lin Honglei, a researcher with the Institute of Geology and Geophysics under CAS, told Xinhua.

Lin also said that to simulate authentic lunar surface conditions on Earth is challenging, thus making the in-situ measurement so essential.

The results are consistent with a preliminary analysis of the returned Chang'e-5 samples, according to the study.

The findings provide more clues to China's Chang'e-6 and Chang'e-7 missions. The investigations of lunar water reserves come into the limelight as the building of manned lunar stations are in the pipeline in the next decades, the report said.

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New Delhi, Nov 21: Karnataka Chief Minister Siddaramaiah on Thursday launched the Karnataka Milk Federation's (KMF) Nandini brand milk products in the Delhi-NCR market, pricing them marginally lower than competitors to gain a foothold in the region.

The cooperative will retail four cow milk variants, curd, and buttermilk from Friday, with competitive pricing that undercuts established players like Mother Dairy and Amul.

Cow milk will be sold at Rs 56 per litre, full Cream Milk at Rs 67 per litre, Standardised Milk at Rs 61 per litre, Toned Milk at Rs 55 per litre, and curd at Rs 74 per kg.

"We have surplus milk in the state. KMF along with Mandya Milk Union will market surplus milk of 3-4 lakh litres per day in Delhi-NCR," Siddaramaiah told reporters after launching the products.

The federation currently collects 100 lakh litres of milk daily, with local consumption at 60 lakh litres, leaving a surplus of 40 lakh litres for expansion into new markets.

However, the Chief Minister acknowledged the challenges of transporting milk over 2,500 km, which takes 50-54 hours.

There is a need to find new markets for surplus milk and gradually the KMF should be able to sell 5-6 lakh litres per day in Delhi-NCR, he added.

KMF Chairman LBP Bheemanaik assured that milk quality would be maintained during transit.

The federation has already partnered with 40 dealers in the Delhi-NCR region to facilitate sales, he added.

With a robust infrastructure of 26.76 lakh milk producers, 15,737 dairy cooperative societies, and 15 district milk unions, KMF has a turnover of Rs 25,000 crore and exports dairy products to over 25 countries.

State Animal Husbandry Minister K Venkatesh and Agriculture Minister N Cheluvarayaswamy were present at the product launch.