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Two satellites for the detection of gravitational waves are launched by a Long March-11 carrier rocket from the Xichang Satellite Launch Center in southwest China's Sichuan Province, December 10, 2020. China sent two satellites for the detection of gravitational waves into planned orbit from the Xichang Satellite Launch Center on Thursday morning. The two satellites, which compose the Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor GECAM mission, were launched by a Long March-11 carrier rocket at 4:14 a.m. Beijing Time, according to the center. (Photo by Ren Hui/Xinhua via Getty Images)
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