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China begins operating world's largest radio telescope

In this Saturday, Sept. 24, 2016 photo released by Xinhua News Agency, an aerial view shows the Five-hundred-meter Aperture Spherical Telescope (FAST) in the remote Pingtang county in southwest China's Guizhou province. China has begun operating the world's largest radio telescope to help search for extraterrestrial life. (Liu Xu/Xinhua via AP)

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