Chang’e-4 landing site

The substance found on the farside of the Moon by China’s lunar rover Yutu-2 might be breccia, experts at the Beijing Aerospace Control Center have stated according to China Central Television (CCTV).

China’s champion – long duration Yutu-2 rover.
Credit: CNSA/CLEP

During the eighth lunar day of exploration, the Yutu-2 rover found colloidal substance in a pit on the Moon’s surface, and after further research, experts believe that it might be breccia formed by impact.

Sawn surface of fragmental lunar breccia 14306 illustrating the nature of lunar brcccias. This is a sample of the Fra Mauro Formation and is typical of ejecta from large basins. Credit: NASA photo no. 72-22103

Smashing, melting and mixing

Lunar breccias are rocks produced by the smashing, melting, and mixing of the lunar surface materials by large and small meteoric impacts. Most of the breccias returned by the Apollo missions were formed in the ancient lunar highlands about 3,900 to 4,000 million years ago.

Up to now, Yutu-2 rover has worked on the Moon’s farside for 18 lunar days.

China’s Chang’e-4 probe and Yutu-2 rover resumed work on June 15, and entered their 19th lunar day of exploration.

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