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Old December 3 2013, 01:59 PM   #16
Locutus of Bored
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Re: Comet ISON has been destroyed

And... now it's destroyed again. This comet is like the Black Knight. "Tis but a scratch! Have at you!"

Comet ISON Is No More, NASA Says

by Mark Memmott
December 02, 2013 12:28 PM

Comet ISON, a "shining green candle in the solar wind," is no longer with us, NASA declared Monday morning in a tribute to what many hoped would be the "comet of the century."

On NASA's Comet ISON Observing Campaign website, astrophysicist Karl Battams writes that ISON was "born 4.5 billion BC, fragmented Nov. 28, 2013 (age 4.5 billion yrs old)."

...

Battans writes there that "while it is conceivable that small chunks of ISON's nucleus still exist, that possibility looks increasingly unlikely and it is with more than a little sadness that we have to declare the comet lost."

As we posted over the weekend, the initial word after ISON's close fly-by of the sun on Thanksgiving Day was that it likely didn't survive the encounter. Then there was more hopeful talk that it just might have held together. Now, NASA has given up that hope.

http://www.npr.org/blogs/thetwo-way/...more-nasa-says
Personally, I think the Sun is being profiled as the killer because it's a G-type Main-Sequence Star, and that another "Star" is more likely the real killer:

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Old December 3 2013, 06:13 PM   #17
Rhubarbodendron
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Re: Comet ISON has been destroyed

LOL! Great minds! I was just going to say that the comet is a bit like Obi Wan: it duels, sheds its cloak and dissolves. Perhaps to return unexpectedly in a different form.

Was the tail somewhere on our planet's plane? Any chance we might fly through it? With a little luck there could at least be a few meteorites.


What puzzles me thoroughly is the trajectory. I mean, look at the pic: there was not much of a change of course after the encounter. The new course was very close to what one would expect after an undamaged swing-by.
That would indicate only a small loss of mass. So, how can the big rest of that mass suddenly vanish?
Had it split up into several bits, we'd have seen it, wouldn't we? There would be several fragments fanning out.
If it really got destroyed, it would have to have crumbled into dust very suddenly. We would have seen an explosion and there appears to have been none.
But what else could cause such a sudden disruption?

Could it possibly have crashed into something we didn't notice? A tiny asteroid perhaps, or some piece of space junk?
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Old December 6 2013, 11:44 PM   #18
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Re: Comet ISON has been destroyed

I want my money back...
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Old December 7 2013, 11:09 PM   #19
Owain Taggart
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Re: Comet ISON has been destroyed

The discovery channel a few days ago ran a special that pretty much summed things up as far as how hyped the comet was. They called it 'The Hunt for the Supercomet." While interesting, it was way overblown in how important the comet was, but in the end they did admit how much of a disappointment the comet was. Yeah, so more like Superdud.

The next comet already proposes to be more interesting. Keep an eye out for Lovejoy.
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Old December 8 2013, 04:53 PM   #20
Rhubarbodendron
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Re: Comet ISON has been destroyed

that seems to be a general trend with discovery channel films these least years. Very lurid headlines and then no real contents. A sign of the times, propably *sigh*

Lovejoy sounds familiar. Is that a periodic comet? I seem to recall haveing seen that one a few years ago. Or am I confusing it with a similarly named one?
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Old December 8 2013, 10:35 PM   #21
Owain Taggart
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Re: Comet ISON has been destroyed

No, but you might be remembering another comet by that same discoverer since most comets are named after their discoverers. About a year ago there was another one by that name that could only be seen in the Southern Hemisphere.
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Old December 8 2013, 11:01 PM   #22
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Re: Comet ISON has been destroyed

McNaught. The Southern Hemisphere in some respects has a more interesting sky than what we see up North.
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Old December 9 2013, 01:21 PM   #23
Rhubarbodendron
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Re: Comet ISON has been destroyed

But we have the pole star
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Old December 10 2013, 03:16 AM   #24
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Re: Comet ISON has been destroyed

Comet McNaught in 2007 was spectacular. I wish I'd had by DSLR back then...
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Old December 10 2013, 08:34 PM   #25
Rhubarbodendron
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Re: Comet ISON has been destroyed

argh, how frustrating! No comet brighter than mag 7 visible atm
And the ISS would have been a rather brilliant mag -0.4 tonight, just like Mercury, only both are too low over the horizon.
Venus and Pluto stand very close together, though, and if the clouds would break up I might possibly be able to see them. Where's a storm when you need one?
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