This diagram shows the Chinese Meridian Project monitoring the Solar-Terrestrial space with its ground-based monitoring facility. (National Space Science Center/Handout via Xinhua)BEIJING, March 21 (Xinhua) --One of China's key scientific infrastructures, the Chinese Meridian Project (CMP), successfully passed national acceptance for its second phase on Friday. It will boost cutting-edge scientific research and provide key support for the country's space weather forecasting services, according to the National Space Science Center of the Chinese Academy of Sciences.The project, also known as the Ground-based Space Environment Monitoring Network, is the world's first comprehensive ground-based monitoring facility to cover Sun-Earth space from the solar atmosphere to near-Earth space.A researcher monitors solar activities at the Space Environment Prediction Center of the Meridian Project Integrated Information and Operations Control Center in Huairou District of Beijing, capital of China, March 20, 2025. (Xinhua/Jin Liwang)A researcher walks past the Space Environment Prediction Center at the Meridian Project Integrated Information and Operations Control Center in Huairou District of Beijing, capital of China, March 20, 2025. (Xinhua/Jin Liwang)This combo photo shows monitoring facilities of the second phase of the Chinese Meridian Project. (National Space Science Center/Handout via Xinhua)This undated photo shows the Meridian Project Integrated Information and Operations Control Center in Huairou District of Beijing, capital of China. (National Space Science Center/Handout via Xinhua)An aerial drone photo taken on Sept. 19, 2024 shows the monitoring facilities of the second phase of the Chinese Meridian Project in Daocheng County, southwest China's Sichuan Province. (Xinhua/Jiang Hongjing)Researchers work at the Meridian Project Integrated Information and Operations Control Center in Huairou District of Beijing, capital of China, March 20, 2025. (Xinhua/Jin Liwang)This combo photo shows monitoring facilities of the second phase of the Chinese Meridian Project. (National Space Science Center/Handout via Xinhua)Researchers pose for photos at the Meridian Project Integrated Information and Operations Control Center in Huairou District of Beijing, capital of China, March 20, 2025. (Xinhua/Jin Liwang)This undated photo shows monitoring facilities of the second phase of the Chinese Meridian Project. (National Space Science Center/Handout via Xinhua)This undated photo shows monitoring facilities of the second phase of the Chinese Meridian Project. (National Space Science Center/Handout via Xinhua)