In this photo released by China's Xinhua News Agency, China's Tianzhou-1 cargo spacecraft moves towards the Tiangong-2 space lab for docking, as seen on a screen at the Beijing Aerospace Control Center in Beijing, Saturday, April 22, 2017. China launched its first unmanned cargo spacecraft Thursday on a mission to dock with the country's space station. (Wang Sijang/Xinhua via AP)

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