Comet ISON

[sky otter]

well belive it or not the evening news had some really good pics as it neared the sun.. i thought they were they actual event but can't find them on line anywhere..
maybe i wasn't paying close enough attention and it was an animation

i'll add them if i can find them






http://www.usatoday.com/story/news/nation/2013/11/28/comet-ison-nasa/3776419/

Did comet ISON flame out on its trip around the sun?
Bart Jansen, USA TODAY 9:01 p.m. EST November 28, 2013

Like Icarus, comet ISON appears to have flown too close to the sun and broken up in its corona.

Scientists had hoped that the comet from the farthest reaches of the solar system would be able to slingshot around the sun Thursday and emerge streaming a tail visible to the naked eye next month.

But after NASA telescopes tracked the comet plunging into the sun's corona, no evidence of it emerged on the other side. Scientists said they would continue to analyze imagery from the telescopes for signs of the comet or debris from it breaking up.

"At this point, I do suspect that the comet has broken up and died," says Karl Battams, a comet scientist for the Naval Research Laboratory, who joined a NASA and Google+ chat from Kitt Peak Observatory in Arizona. "Let's at least give it a couple of more hours before we start writing the obituary."

Even if the comet broke up, it offered a very rare opportunity to see how one of the oldest objects in the solar system interacted with the sun's magnetic field.

The comet originated in the Oort Cloud, a region halfway from the sun to the next closest star. Scientists say comet ISON would have been nudged by gravity from other stars into its 5-million-year plunge toward the sun.

Although scientists have tracked other comets from the Oort Cloud, Battams said this one was the first in recorded astronomy from so far away that passed so close to the sun, passing the sun at a distance of about 1 million miles.

"This is a spectacularly rare event," Battams said. "We have no idea when we're going to see something this amazing again."

The reason scientists study comets is to find out what they contain because they were born along with the solar system 4.5 billion years ago. When comets pass close enough to the sun, their ice melts away and dust gives off signals that describe its composition.

Even if comet ISON evaporated and broke apart near the sun, its behavior in the sun's magnetic field will help scientists understand more about both comets and the sun.

"This gives us an opportunity to see and study these magnetic fields in a way we normally couldn't do," said Alex Young, a solar physicist at NASA's Goddard Space Flight Center. "Nature is giving us this unique opportunity to study these magnetic fields."

ISON (pronounced ICE-on) stands for International Scientific Optical Network. It was discovered in September 2012 by a pair of amateur astronomers in Russia.

Two NASA telescopes that tracked the comet's approach to the sun were called SOHO, for Solar and Heliospheric Observatory, and SDO, the Solar Dynamics Observatory.

SOHO has a metal coin that blocks out the sun's direct light, so that the corona of fountains of magnetic field can be seen splashing off the sun. Comet ISON was visible in SOHO's red-and-blue images as it approached the sun with a long tail.

But as it approached its closest point to the sun at 1:48 p.m. ET, the half-mile point of the comet faded and the tail thousands of miles across became fuzzier. That suggested it might have broken up.

"We're not really seeing the head of the comet," Phil Plait, an astronomer and author who writes for Slate's Bad Astronomy blog, said of a SOHO image taken at 12:24 p.m. "That to me looks like the nucleus broke up."

SDO, which showed the sun in ultraviolet light as a smoldering yellow marble, glimpsed comet ISON racing toward the sun. But as SDO shifted to watch the comet reappear on the other side, ISON never showed.

This was puzzling because Dean Pesnell, a solar physicist and project scientist for SDO, said even if the comet broke up, its remains should have been visible in the magnetic field for 45 minutes.

"I'd like to know what happened to our half-mile of material that was going around the sun," Pesnell said of the comet. "We should be able to see something."

Scientists said they would continue to review images from 11 telescopes worldwide that tracked the comet, to learn what became of it and learn more about the sun.

"I'm not very hopeful at this point," Plait said of comet ISON.



...........................................

http://www.nola.com/science/index.ssf/2013/11/comet_ison_appears_to_have_bro.html



Comet ISON appears to have broken apart near the sun

STOCKHOLM (AP) — Scientists say it appears a comet from the fringes of the solar system didn't survive its close encounter with the sizzling sun.

Images from NASA spacecraft showed Comet ISON approaching for its slingshot around the sun on Thursday, but nothing coming out on the other side.

In a Google+ hangout, U.S. Navy solar researcher Karl Battams said "ISON probably hasn't survived this journey."

Phil Plait, an astronomer who runs the "Bad Astronomy" blog, agreed, saying "I don't think the comet made it."

Still, he said, it wouldn't be all bad news if the 4.5-billion-year-old rock broke up into pieces, because astronomers might be able to study the pieces and learn more about comets.

[sky otter]

well this first guy says that it came out the other side
but nasa said that it hasn't yet...
so dang there is still hope it might..or has
guess there is more to the story


not done yet..




BREAKING NEWS -- COMET ISON SURVIVES!!! -- 28 NOV 2013









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http://www.nbcnews.com/science/comet-ison-vanishes-puff-mystery-it-goes-around-sun-2D11670914

Comet ISON leaves a mystery behind as it goes around the sun

Alan Boyle, Science Editor NBC News
2 hours ago

vid at link


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https://plus.google.com/events/c8t7i5dbr1k50oq89giloiqe8rc#events/c8t7i5dbr1k50oq89giloiqe8rc

NASA Hangout  Comet Ison live

[zorgon]

COMET ISON, R.I.P?


Evidence is mounting that comet ISON did not survive its brush with the sun earlier today. At 01:45 EST on 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 a new movie 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:




COMET ISON--UPDATE:

New images from SOHO show something emerging from behind the sun. It could be a small fragment of Comet ISON's nucleus or perhaps a "headless comet"--a stream of debris marking the remains of the comet's disintegrated core. Watch the movie and stay tuned for updates.



http://spaceweather.com/archive.php?view=1&day=28&month=11&year=2013

[WarToad]

There were suspicions the comet core was breaking up as it passed Mercury's orbit.  Now kinda looks like the tidal gravity forces of passing so close to the sun were too much for the little guy and may have finished off the job.

[Pimander]

http://www.usatoday.com/story/tech/2013/11/27/comet-ison/3767561/

Umm... whats that other thing besides the comet? Another one?

Is the video still there?  I can't see it using my browser....

[Pimander]

We need to see the frames after that.  The comet was expected to lose mass.  Does the smaller object continue to exist in the frames beyond those?

[HeywoodFloyd]

ISON is still alive, although it lost around 4/5 of its mass (rough estimate)

from Helioviewer - SOHO LASCO C3




you can get an animated gif of the entire passage of ISON during perihelion from SOHO Movie Theater, here:

http://soho.esac.esa.int/cgi-bin/soho_movie_theater

(insert: LASCO C3, date: 2013-11-28 to 2013-11-29 )

[sky otter]

wow.. it lost size but there it goes...it did make it   

[HeywoodFloyd]

Yes, it did.

However, the SOHO C3 and C2 images of the perihelion passage are weird,
for 2 reasons:

1. - at the closest approach to the Sun, visible on LASCO C2, ISON appeared to disintegrate.
But it didn't.

2.- right after perihelion, in these last hours, ISON is developing a new tail, a dual, very divergent tail.
And the direction of this dual tail is NOT opposite to the position of the Sun, as it should be, but roughly at 90° to the Sun.

It does not make sense.
Weird.


You can check the NASA animated gif here:

http://science.nasa.gov/media/medialibrary/2013/11/29/weird_anim.gif

You can check in more detail, and step by step, on Helioviewer:

http://www.helioviewer.org/

insert: SOHO LASCO C3 & C2

-------------------------------------

I do not know if ISON will be visible with naked eye. Too early to tell.
I also wonder if it changed the previously predicted path.

[deuem]

OK, so I did win the bet, pay off at the Deuem window.

ISON said, "I'll be back"

[A51Watcher]

Is the video still there?  I can't see it using my browser....

Yeah Pim, it's still there.

It's not a utoob video though otherwise I would paste the code.

It's some proprietary setup usatoday has set up.


http://www.usatoday.com/story/tech/2013/11/27/comet-ison/3767561/

[hoss58]

Here is a good look at Spaceweather.com. 


http://science.nasa.gov/media/medialibrary/2013/11/29/weird_anim2.gif




Oh wait ... Heywood Floyd all ready got it .

[Pimander]

Yeah Pim, it's still there.

I just can't view it.  Will try other browsers later. 

It could make sense that there is a tail that travels differently.  Higher mass ejecta may not be effected by the solar wind and could be influenced by other forces.  You see how the comet itself is made to swing around the sun?  Well what makes you think that matter could not be slightly lighter and not be made to "swing" at a slightly higher rate?  Sorry but it is not mysterious in terms of orbital dynamics....  I may have explained it poorly but it is not unusual.

[A51Watcher]

I just can't view it.  Will try other browsers later. 

No worries, a quick screen cap and u/l to the toob and here we are -








The comparitive size and proximity to us was a bit disconcerting, but no word from msm?

[RUSSO]

What really bothers me about this whole story is that NASA Comet ISON Google+ Hangout "presentation" seemed to show just one frame of the sun the whole time, as you can see in the videos bellow:

If this Video is correct, Nasa has hidden the real footage from us.

Nov. 28, SDO AIA 211 frozen frame during ISON perihelion.

Where is the public footage available which shows ISON passage behind the sun? Not need to say it is obvious that NASA, Russians and Chinese will have access to it.

Why is this data censored? Not a comet? A danger to earth? Some kind of interaction with the sun that defies our view about actual science?

To me, they know something and they want(need?) us in the dark about it.

Anyways this is the last image from ison:



and it seems to be fading away, but can we really believe in official pictures these days?

Maybe there is a reasonable explanation about why this happened, but i cant find one.

Peace.