Rosetta CometThis composite is a mosaic comprising four individual Rosetta NAVCAM images taken from 19 miles 31 kilometers from the center of comet 67P/Churyumov-Gerasimenko on Nov. 20, 2014.More: https://images.nasa.gov/details/PIA18899Credit: ESA/Rosetta/NAVCAM#comet #rosetta #astrodon #astronomy #astrophotography #astrophysics