At present, there are only three countries in the world that sample and return extraterrestrial celestial bodies, and they all sample from the moon. gram). Strictly speaking, these costly collected samples are not allowed to be circulated to the market, but on May 26, 2022, the “Apollo 11 Experimental Lunar Soil” listed on the official website of the RR Auction House in the United States weighed about 40 mg, and the estimated price 1 gram for 10 million dollars. 　　It is unimaginable that a bag of remaining moon dust was auctioned at a price of 1.8 million US dollars in 2017, and then in 2022, five moon dust collected…