Evidence is mounting that comet ISON did not survive its brush with the sun earlier today. Nov. 28th, Thanksgiving Day in the USA, the comet was supposed to pass a little more than a million miles above the surface of the sun. As themovie from SOHO shows, the comet had already disintegrated. Click to set the scene in motion, and pay careful attention to the head of the comet.
In the movie, Comet ISON is clearly falling apart as it approaches the sun. Researchers working with the Solar Dynamics Observatory report that they are saw nothing along the track that ISON was expected to follow through the sun's atmosphere.
The movie spans a day and a half period from Nov. 27th (01:41 UT) to 28th (15:22 UT). We see that Comet ISON brightened dramatically on Nov. 27th before fading on Nov. 28th. That brightening might have been the disintegration event, in which the comet cracked open and spilled its vaporizing contents into space.
There is still a slight chance that some fraction of Comet ISON has survived.