Comet Ison may be a like a ship? If you watch the video below, it don't look like a comet to me.
So I went here:
fits2web image viewer (Ison 130430 WFC3 F606W)'
...where the image of Ison is available for download and I did what was done in the video to see what happens, here are the results:
Looks like it has perfect symmetry to me, and it did exactly what the person in the video said it would do. What do you guys think, is it a ship?