Rosetta watches comet shed its dusty coat

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ESA’s Rosetta mission is providing unique insight into the life cycle of a comet’s dusty surface, watching 67P/Churyumov–Gerasimenko as it sheds the dusty coat it has accumulated over the past four years.

via ESA Space Science

http://www.esa.int/Our_Activities/Space_Science/Rosetta/Rosetta_watches_comet_shed_its_dusty_coat