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Ten years ago, Pluto emerged from the gloom at the Solar System’s ragged edge – and a new world came in from the cold. Five billion kilometres (3 billion miles) from Earth, on 14 July 2015, NASA’s pia

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Where did life on Earth begin? That sounds like a relatively straightforward question. Surely life on Earth began… well, on Earth, right? We know this planet had the right conditions for life to arise

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A 3D illustration of China’s Tiangong space station ...

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