This is a full video of Comet ISON starting November 26 through today, November 30. Clearly, the comet vanished.. Reappeared. And now, maybe, is vanishing again.
Ison may have been like a cat coming back, but in the last few frames, it does not appear to be much of anything.
So.. who will pronounce Ison dead and when..?
(Source: https://www.youtube.com/)