I can't get over the information I'm getting from the animation. Notice the shadowing which takes place in the image. I think that may be evidence of a twilight effect on the moon.
I don't think it is cloud. If it were cloud then the image would be less focused, less resolved in the place where the cloud appears. Instead, the image contains more detail in the places where the shadow appears to transit the planetoid. I think I may have found a way to prove the existence of dark matter.
