Rosetta is a robotic spacecraft built and launched by the European Space Agency to perform a detailed study of comet 67P/Churyumov–Gerasimenko. It is part of the ESA Horizon 2000 cornerstone missions and is the first mission designed to both orbit and land on a comet.
Could Rosetta unlock Earth's secrets? http://www.cnn.com/video/data/2.0/video/international/2014/08/01/rosetta-animation-comet-space.cnn.html
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