In pictures: Journey through the planets

http://www.bbc.co.uk/news/in-pictures-33535765

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Nasa's New Horizons mission is sending back the most detailed images of Pluto ever seen. For more than 70 years, it was one of nine planets recognised in our Solar System, but it is now classed as a dwarf planet. Here, we take a journey through the planets and Pluto, with images taken by a selection of spacecraft sent out to explore.