On this day 39 years ago, on March 21, 1986 (February 12, 1986 lunar calendar), the Soviet spacecraft and the "Peace" space station were successfully docked. On March 21, 1986, the Soviet "Forward-25" spacecraft and the "Peace" space station operating in orbit were successfully docked. The "Forward-25" spacecraft flew off the ground on March 19. The spacecraft carried fuel, food, drinking water and technical equipment to compensate the two astronauts working in the space station. The two astronauts were named Jim and Solovyov, who set a record of 237 days in space in 1984. The "Mir" space station they entered this time is the third generation of the Soviet space station, which will provide a permanent place for astronauts and scientists to take turns doing research here.