Liz;
Yep .. awesome photos alright .. it might be a giant 'spud' that got away from some alien's veggie patch !
Somewhat more seriously though, is that smooth bit connecting the two halves. I thought it might have been some missing data in the image but it appears in every one of them !
Very strange looking object. I'll leave it up to the comet guys to figure that bit out.
I hope Outbackmanyep is enjoying all this ! (He's been very patient whilst waiting in anticipation for it all to unfold .. bet he's excited, also).
Cheers