A satellite that can provide 24/7 surveillance of a third of the Earth’s surface relies on a rare mineral whose global supply is dominated by China, a new study has disclosed. The Ludi Tance-4 01 radar satellite, powered by gallium nitride (GaN) semiconductors, is the only satellite of its kind....

Source: [SCMP](https://www.scmp.com/news/china/science/article/3361343/chinas-unique-high-orbit-satellite-using-rare-metal-us-struggles-obtain?utm_source=rss_feed)

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