Karl Battams at NASA’s Comet ISON Observing Campaign – wrote on Twitter:

“Alright we’re calling it, and you heard it here first: We believe some small part of #ISON’s nucleus has SURVIVED perihelion. ”  As reported on Earthsky.org.

http://earthsky.org/space/big-sun-diving-comet-ison-might-be-spectacular-in-2013