Re: I already agreed -- to a degree . . .
I stated there would be a region where the tail would be unaffected by the Solar wind. This is blocked by the bow shock of the comet, which gives the shape to the ion tail.
No. You would not see the shadow of the nucleus. It is too small to be relevant.
Also, the idea that where there is Solar light there is Solar wind is an error. The region blocked by the comet bow shock still has Solar light passing through it. Do not mistake the charged particles of the Solar wind which energized the ion tail with the photons of actual light.
Dan