This week’s CometWatch entry was taken with Rosetta’s NAVCAM on 22 August 2016, when the spacecraft was 6.8 km from the centre of Comet 67P/Churyumov-Gerasimenko. The average distance to the surface is about 5.6 km, and with an image scale of 0.5 m/pixel, the image measures about 500 m across. … Continue reading CometWatch 22 August