Technicians work at the assembly site of the single-aperture spherical telescope "FAST" in Pingtang county of southwest China's Guizhou province, July 27, 2015. [Photo: Xinhua]
A week after the Kepler space telescope eyed an "older, bigger cousin" of the Earth, scientists turned their focus on a super-sensitive "ear", hoping to discover more, maybe "cousins" of human beings.
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