On June 3, an international team led by Chinese scientists discovered Kepler-725c—a super-Earth in the habitable zone of a Sun-like star. Using innovative Transit Timing Variation technology, this breakthrough marks a key step in finding Earth-like exoplanets. (Photo /Yunnan Astronomical Observatory, Chinese Academy of Sciences)
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By Wang Ziyuan, Huang Xinyao(intern) and Zhang Wenling/China Youth Daily
责任编辑：叶雨婷 傅瑞
编辑：郭艳丽