We discussed the ISON ISOFF again nature of comet ISON in this WUWT thread, now it looks like ISOFF again.
From NASA’s Spaceweather.com (h/t Fernando): Comet ISON is fading fast as it recedes from the sun. Whatever piece of the comet survived the Thanksgiving flyby of the sun is now dissipating in a cloud of dust. (animation follows)
(Note: The animation may take a minute or more to load, based on your Internet connection speed.) Click to view a 3-day movie centered on perihelion (closest approach to the sun):
This development makes it unlikely that Comet ISON will put on a good show after it exits the glare of the sun in early December. Experienced astro-photographers might be able to capture the comet’s fading “ghost” in the pre-dawn sky, but a naked-eye spectacle can be ruled out.
On Nov. 29th, pilot Brian Whittaker tried to catch a first glimpse of Comet ISON from Earth, post-perihelion, from a plane flying 36,000 feet over the Arctic Circle in northern Canada. No luck:
“Ideal viewing conditions from the Arctic revealed no Comet ISON,” reports Whittaker. “This negative report is to quench the thirst of other fellow dreamers under cloudy skies or further south. Later I could see that SOHO showed the comet dimming further.”
Despite Whittaker’s negative result, it is too soon to rule out observations from Earth as the twice-dead comet moves away from the glare of the sun. Meanwhile, NASA’s fleet of solar observatory will be tracking the remains.