Europe's Rosetta, after a Hollywood-style chase that lasted more than 10 years and spanned a distance of 4 billion miles, has become the first ever spacecraft to orbit a comet. The ESA's Rosetta probe will now orbit the comet -- dubbed 67P or unofficially the rubber duck -- for a few months, in preparation for an even more exciting event later in the year: In November, Rosetta will deploy Philae, the first ever spacecraft to attempt a landing on a comet.
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