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WATCH: Here’s how astronauts wash their hair in space

It’s a routine practice of most of us to wash our hair regularly, but have you ever thought how astronauts do the same in space? It will be fascinating for you to discover. It's totally a different story. Washing hair in zero gravity is a precarious business - but it needs to be done. On a trip to the International Space Station in 2012, Expedition 36 astronaut Karen Nyberg demonstrated just how she and her colleagues keep their hair clean while floating around in orbit. As you can see in this video from Nasa, it's…