http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2014/10/comet_on_18_october_navcam/14986047-1-eng-GB/Comet_on_18_October_NavCam.jpg
At first glance it looks like a moonlit mountain scene, but on closer examination several strange things become apparent.
First, gravity is wrong for a mountainscape. There are many loose boulders sprinkled around in places where they would slide away, if this was a view of earth.
Second, in the sandy (sand??) area in the lower right there appear to be dune-like ripples, which normally form from wind, which would imply some kind of atmosphere. But of course, this comet is floating in outer space, and has an extremely weak gravity.
But third, there appears to be some kind of haze in the photo. Perhaps dust, perhaps gas coming from the comets interior. Does this have any relation to the dune-like features?
http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2014/10/comet_on_18_october_navcam/14986047-1-eng-GB/Comet_on_18_October_NavCam.jpg
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