Tag: China

After spending almost a month in lunar orbit, the lander on China’s Chang’e-6 sample return mission will attempt a soft touchdown on Moon’s far side on June 1, 2024 at 8:00 pm (Eastern).

If successful, the lander will go through initial checks and setup. It will then begin drilling and scooping up materials from the surface. These samples, expected to weigh up to 2,000 grams, will be loaded into an ascent vehicle. The ascender will then launch the precious cargo back into lunar orbit for rendezvous and docking with the orbiter. Surface operations will last about 48 hours.

The map to the right indicates the landing zone by the red box, on the southern edge of Apollo Crater, indicated by the wavy white circle. The black circle marks the perimeter of South Aitken Basin, the largest impact basin on the Moon.

Once the ascender docks with the orbiter, the sample will be transferred into the sample return capsule, which will bring that sample back to Earth in late June.

According to a new paper published in late April, scientists analyzing the samples returned from the Moon by China’s Chang’e-5 Moon mission in 2021 have found more water embedded in the topsoil than expected. From the paper’s conclusions:

[O]ur results indicate that a considerable [solar wind]-derived water is stored within at least the uppermost meter (down to 0.8 meters) of the regolith beneath the lunar surface. This type of water represents a valuable potential resource for future in situ exploration of the Moon, as it not only has higher contents than indigenous water (up to several wt.% vs. <50 ppm) but could also be extracted by heating.

We are still not talking about a lot of water, but this result suggests there is more than earlier reports from Chang’e-5’s samples. This result also could explain the hydrogen signature across much of the Moon’s surface by Chandrayaan-1.