The image shows a strange shining circular object that seems to float on the surface of the comet.
Though there is no explanation for this shining object, it is assumed that the anomaly is just a camera glitch…
ESA’s Rosetta orbiter has now moved in so close to its comet quarry that the primordial body overwhelms the screen, and thus its snapping mapping mosaics to capture the complete scene of the bizarre world so it can find the most suitable spot for the momentous Philae landing – upcoming in mid-November. Continue reading including more images at univeretoday
Below a high resolution view of a part of the comet. The navcam image was taken from a distance of 61 km from comet 67P.
An amazing High Resolution large size 2048x2048 at: http://apod.nasa.gov/apod/image/1409/cometCG01_rosetta_2048.jpg