A Long March-4B rocket carrying a 2.5-tonne telescope lifts off from the Jiuquan Satellite Launch Center in northwest China's Gobi Desert on June 15, 2017. China successfully launched on June 15 its first X-ray space telescope, named Insight, to study black holes, pulsars and gamma-ray bursts, state media reported. (Photo by AFP Photo/Stringer)
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