China’s lunar rover is helping to unravel a Moon mystery

China’s lunar rover is helping to unravel a Moon mystery

May 17, 2019 Off By readly




The Chinese space program started 2019 with a major milestone when the Chang’e 4 lunar lander successfully touched down on the far side of the Moon. It was the first time any country had completed such a feat, the landing itself was just the first of many objectives China had for the mission.

In the days that followed, the lander deployed a rover, snapped photos, and even grew some plants. Its rover had some work of its own to do as well, and a new research paper published in Nature reveals that some of the readings it gathered from lunar surface samples were rather surprising for scientists.

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Today, the Moon is relatively quiet and cool, but researchers don’t believe this was always the case. It’s thought that the young Moon was once largely covered in superheated liquid rock that flowed across the surface before eventually cooling.

While the rock was still hot, scientists assume that denser minerals would have naturally settled deep beneath the surface. Once the oceans of magma fully cooled, heavy minerals like pyroxene and olivine would have already been buried. That thinking was seemingly challenged when China’s Yutu-2 rover gathered samples that clearly contained both olivine and pyroxene, but researchers have a very good explanation for why they found those specific minerals on the surface.

Chang’e 4 landed in a spot on the Moon known as the Von Kármán crater, in an area known as the South Pole-Aitken (SPA) basin. The basin is what is left of a massive crater that formed long ago, and researchers believe that the presence of heavy minerals in the surface samples gathered by the rover is evidence that a large impact may have penetrated deep enough to eject a large amount of rock and dust from the Moon’s mantle, covering the area with material that would otherwise have remained buried.

“Geological context suggests that these materials were excavated from below the SPA floor by the nearby 72-km-diameter Finsen impact crater event, and transported to the landing site,” the researchers write. “Continued exploration by Yutu-2 will target these materials on the floor of the Von Kármán crater to understand their geologic context, origin, and abundance, and to assess the possibility of sample-return scenarios.”

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See the original version of this article on BGR.com

Source of this (above) article: https://news.yahoo.com/china-lunar-rover-helping-unravel-211617403.html