During a rare opportunity to interact with mainland Chinese astronauts in space through a live video lecture on Thursday, 15-year-old student Men Ruihan in Hong Kong asked whether water in space could be recycled.Astronaut Wang Yaping said the crew had a complete water recycling system while in orbit and demonstrated how to drink the liquid by releasing floating water balls in gravity-free space.Men was among the hundreds of pupils from Hong Kong, Macau and various mainland regions such as…

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