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Underground Neutrino Observatory Operation - Chin

File photo dated on October 10, 2025 shows staff members working on a stainless steel truss of the central detector of the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Jin Liwang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

(Researchers applaud to celebrate the successful data acquisition at a control room of the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province, August 26, 2025. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction Photo by Liu Yuexiang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

This is a schematic diagram of a reactor neutrino event detected by the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province, Aug. 24, 2025. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

File photo taken on Nov. 22, 2024 shows the acrylic sphere of the central detector of the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Jin Liwang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

This stitched photo shows the central detector of the Jiangmen Underground Neutrino Observatory (JUNO) under construction in Jiangmen, south China's Guangdong Province, Oct. 9, 2024. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Jin Liwang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

Researchers work at a control room of the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province, on August 26, 2025. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction Photo by Liu Yuexiang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

File photo taken on Dec. 16, 2024 shows the central detector of the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Jin Liwang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

File photo taken on Dec. 17, 2024 shows photo-multiplier tubes seen from top of the acrylic sphere of the liquid-scintillator detector in Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Jin Liwang Xinhua/ABACAPRESS.COM

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Underground Neutrino Observatory Operation - Chin

This is a schematic diagram of a reactor neutrino event detected by the Jiangmen Underground Neutrino Observatory (JUNO) in Jiangmen, south China's Guangdong Province, on August 24, 2025. The world's largest transparent spherical detector began operation in China on Tuesday, making it the world's first operational ultra-large scientific facility dedicated to neutrino research with ultra-high precision. Having completed the filling of its 20,000-tonne liquid scintillator detector, JUNO in Guangdong began taking data after more than a decade of preparation and construction, on August 26, 2025 in Beijing, China. Photo by Xinhua/ABACAPRESS.COM