The 'sunshine combined image, works best for me thus far of the few available. Is the conjoining of two items possible here, or, with the surface so active and covered by linear 'scale' like polygon patterns, is the surface showing an active material all through a single body?
I see on the smaller end lighting effects faintly of dual angled counter spiraling surface shading, or, with slight imagination, a deeper fracturing of possible impact 'spalling' or active mineral/chemical ordering of material throughout the comet.
The largest imaging shows what could be mistaken for a translucent view through the smoother joining material. With several angles of view it both appears valid as a view through surface material, and a view of a deeper conjoined layered material applied two two similar bodies, giving the sunlight angles an illusion of conjoining objects, or, a surface following weaknesses which are seen as passing through the central portion of the singular body.
Any final verdicts from professionals on the possibility of inactive volatiles dominating the central area?
The scene reminds me of the concept of a slab of material under compression, with the outer ends lacking compression and vesiculating, so, I reversed the cause in my imagination, and try to imagine a residual accumulation of the central material after low energy volatiles have escaped, leaving a dusty central buildup of material.
Then again, I suppose the residual impacting from the ends could have left a 'shock cone of material, without a single source body being left in the current scene.
I saw in altered views a subdued core round item with a sunburst of smaller rays or bright lumps ringing it along the smoother central portion, but it is very subtle in tonal variation, so I haven't uploaded a view of it as yet.
The backlighting angles sure gives an illusion of transparency in the finer shading lineations if it is an illusion.
