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China Confirms Presence of Water on Moon

Moon water
China’s Chang’e 5 has found water on the moon. Credit: CSNA/Siyu Zhang/Kevin M. Gill – ChangE-4 – PCAM, CC2/Wikipedia

China’s Chang’e 5 lunar landing and sampling mission found water on the moon both through on-site analysis and in materials delivered to Earth.

The daring Chang’e 5 mission touched down on the moon in December 2020, drilling down for and scooping up the youngest lunar samples ever collected.

Soon after, an ascent vehicle blasted off from the mission’s landing site in Oceanus Procellarum (the Sea of Storms), and Chang’e 5’s samples returned to Earth later in the month.

Water found in moon samples

Scientists have now revealed that the lander’s spectral scan of the surface and analysis of the samples in laboratories on Earth both show the presence of water in the region.

“For the first time in the world, the results of laboratory analysis of lunar return samples and spectral data from in-situ lunar surface surveys were used jointly to examine the presence, form and amount of ‘water’ in lunar samples,” co-author Li Chunlai, a planetary scientist at the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC), said in a statement.

Finding water on the Moon is crucial not only for providing support for future human lunar inhabitation but understanding the evolution of the solar system itself. While we knew there were likely to be ice sheets hidden under the Moon’s surface, there has yet to be direct observations of native water until now, says an article published in Cosmos magazine.

In 2020, NASA scientists disclosed that for the first time, water has been discovered on the surface of the Moon.

As a result of data collected by NASA’s Lunar Reconnaissance Orbiter, scientists were able to confirm their theory that there is water on the sunlit surface of the moon.

“We had indications that H2O—the familiar water we know—might be present on the sunlit side of the moon,” Paul Herz, the director of the astrophysics division at NASA’s Science Mission Directorate explained. “Now we know it is there. This discovery challenges our understanding of the lunar surface and raises intriguing questions about resources relevant for deep space exploration.”

No vast reservoirs of water on the lunar surface

The results show that, on average, the rocks and soil of the moon’s surface contain about 30 hydroxyl parts per million; hydroxyl with one oxygen atom and one hydrogen atom is the main ingredient of water.

The team also assessed the water source to be mainly indigenous to the moon contained in a crystalline mineral called apatite.

Less hydroxyl than expected appears to have come from the solar wind, the constant stream of charged particles flowing off the sun and across the solar system, which barrages the moon and implants its surface with particles.

“The results accurately answer the question of the distribution characteristics and source of water in the Chang’e 5 landing zone and provide a ground truth for the interpretation and estimation of water signals in remote sensing survey data,” Li added, according to

Li said future Chang’e missions will also focus on water to build a bigger picture of lunar water, and particularly, on potential water-ice at the lunar south pole with Chang’e 7.

The results were published in Nature Communications on Tuesday, June 14th.

Related: Scientists Grow Food Using Soil from Moon


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