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Yet more pictures of Pluto are being downloaded and analysed from Nasa’s New Horizons mission to the outer reaches of the Solar system. Dr Cathy Olkin, Deputy Project Scientist on the mission, reveals more surprises about Pluto - the latest batch show strange ‘dune like’ features which could indicate wind erosion.

(Image caption: The surface of Pluto – credit: AFP photo handout-Nasa/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute)