The terrestrially situated DSRT joins NASA’s Parker Solar Probe and the European Space Agency’s Solar Orbiter, launched in 2018 and 2020 respectively, in ongoing efforts to study the sun’s complexities. Radio telescopes such as the DSRT are especially helpful when studying activity in the sun’s upper atmosphere, or corona, such as solar flares. Another solar weather event, a coronal mass ejection (CME), involves hot plasma eruptions that release high-energy particles which then can travel to Earth. This radiation often damages power grids and satellites—such as what happened in February 2022 when a solar storm blasted 40 Starlink satellites out of orbit. “China now has instruments that can observe all levels of the sun, from its surface to the outermost atmosphere,” Hui Tian, a solar physicist at Beijing’s Peking University, told Nature. Compared to similar telescopic arrays, the DSRT will be more finely tuned, and thus potentially capture weaker signals from high-energy particles emitted during CME events. As the sky above us becomes increasingly—and sometimes problematically—crowded by satellites, developing more reliable, accurate, and detailed analysis of solar activity will be critical to further expansion.
