Today, 39 years ago, on December 4, 1986 (November 3, 1986), the Soviet Union painted the first geological map of space. In early December 1986, the Soviet Union painted the world's first geological map of space. This geological map of 8 square meters was drawn based on photos taken by Soviet satellites and orbital stations and exhibited in Leningrad. The advantage of the map is that it can understand the characteristics of the regions of the earth's large structure, and also found the prospective development of the oil and gas region on the northern coast of the Caspian Sea, the new mines of Kazakhstan, the diamonds of Siberia and the coal mines of the Far East. The cosmic geology has a high economic benefit, a photo taken from the orbit can cover a range of 17,000 square kilometers, shortening