That’s the somewhat deflating realization a team of Chinese scientists made after they studied the substance, discovered by China’s Yutu 2 rover last July, as Space.com first reported.
On January 3 2019, China’s Chang’e 4 lunar probe made history by becoming the first spacecraft to land on the far side of the Moon, the mysterious, less-studied side facing away from Earth.
In tow was the Yutu 2 rover, designed to crawl the rocky landscape over several freezing months.