[Aracelis]

Thanks for the ping! For comparison, here's shot of the impact sites of fragments D and G from Comet Shoemaker-Levy 9. The black spot in question appears to have at least one plume associated with it, but not halos, as demonstrated by the impacts of fragments D and G in this photo.

ESA-Science

[edwin hubble]

This is interesting. We don't see in the current 'dark spot' the structure or pattern of the earlier comet impact discoloration.

So, is the darkness just a result of a 'lesion', looking deep into lower layers... or turbulence... or something else? Is there a temperature factor?

[skinkinthegrass]

Great Pic....and its' not a ZIT!.... ( @ least I hope not) :)