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Fantastic image. The full size one is interesting... as a very interesting feature located at 3 o'clock on the upper section (top) of the comet. It looks almost white, casting a shadow that is not connected to the bottom part of the feature. Any interpretation?
We know that many of you like exploring these images, and one feature you may quickly notice is the rather bright object seen near the centre of the slope in the upper right. We too were curious and looked at an image taken earlier and it was not visible (the shadow beneath it is coincidence; this is also seen in images without the object). Therefore it is most likely either an image artefact or a transient object in the foreground.
Indeed, if you adjust the contrast of the image you will see that there is a lot of ‘noise’ in the background. Some of this is simply detector noise and cosmic rays, but there seem to be a few bright objects that may be dust/ice particles between Rosetta and the comet.
originally posted by: wildespace
One ... possibility, though, is that the top of the boulder has some very reflective inclusions, which reflect sunlight only in the direction the camera was looking at in that particular image.