Jets are blasting from the active neck of comet 67P/Churyumov-Gerasimenko in this four-image photo mosaic comprising images taken on 26 September 2014 by the European Space Agency's Rosetta spacecraft at a distance of  26.3 kilometers (16 miles) from the center of the comet.  See the montage ot four individual navcam images below.  Credit: ESA/Rosetta/NAVCAM/Marco Di Lorenzo/Ken Kremer – kenkremer.com
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