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Kitty Bear
Disturbed Friends Of Diazepam Disturbed Acquaintance
894
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Posted - 2013.10.06 16:38:00 -
[1] - Quote
So sad.
Just when your hoping for a bit of decent sky-gazing, the universe says no |
baltec1
Bat Country
8151
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Posted - 2013.10.06 20:03:00 -
[2] - Quote
Even if was going to be perdy the uk weather would have said no. |
silens vesica
Corsair Cartel
2081
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Posted - 2013.10.07 02:53:00 -
[3] - Quote
I'll still be looking - Who knows, maybe the pig will learn to sing? Tell someone you love them today, because life is short. But scream it at them in Esperanto, because life is also terrifying and confusing.
Didn't vote? Then you voted for NulBloc |
Graygor
1kB Realty 1kB Galactic
67636
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Posted - 2013.10.07 03:14:00 -
[4] - Quote
baltec1 wrote:Even if it was going to be perdy the uk weather would have said no.
The weather always says no in the uk. "I think you should buy a new Mayan calendar. Mine has muscle cars on it." --áKenneth O'Hara
"I dont think that can happen, you can see Gray has his invuln field on in his portrait." - Commisar Kate |
Khergit Deserters
Crom's Angels
1742
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Posted - 2013.10.07 03:40:00 -
[5] - Quote
LOL on the thread title. Poor little guy. Now, to hit the link.... |
Kitty Bear
Disturbed Friends Of Diazepam Disturbed Acquaintance
939
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Posted - 2013.10.22 11:51:00 -
[6] - Quote
update
the universe says yes, maybe. it's still a while out though |
Bischopt
Arbitrary Repossession
275
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Posted - 2013.10.22 12:02:00 -
[7] - Quote
Please ISON, shine! Be pretty! |
Krixtal Icefluxor
INLAND EMPIRE Galactic
59493
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Posted - 2013.10.22 14:20:00 -
[8] - Quote
Bischopt wrote:Please ISON, shine! Be pretty!
And give the Earth a Big Hug Glomp "Who thinks it's normal to kneel down to a naked man who's nailed to a cross? It's like a bad leather bar." -- John Waters |
Kitty Bear
Disturbed Friends Of Diazepam Disturbed Acquaintance
996
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Posted - 2013.11.27 00:26:00 -
[9] - Quote
possibly a final ISON update
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Eurydia Vespasian
Storm Hunters
4444
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Posted - 2013.11.27 03:41:00 -
[10] - Quote
I saw it a couple mornings late last week. I set my alarm an hour earlier than I usually get up for work. it was pretty easy to spot unaided. then again I live in the middle of nowhere. |
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Kitty Bear
Disturbed Friends Of Diazepam Disturbed Acquaintance
996
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Posted - 2013.11.28 15:44:00 -
[11] - Quote
ISON as seen from space by STEREO |
Eurydia Vespasian
Storm Hunters
4444
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Posted - 2013.11.28 22:29:00 -
[12] - Quote
seems it may have busted up a little on it's swing around the sun. don't know for sure but I just heard it looks like it's not whole anymore. |
SeenButNotHeard
Doing The Business
83
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Posted - 2013.11.29 00:01:00 -
[13] - Quote
I am feeling a bit sad. I wanted a picture of this. Taken from my cheapy Samsung on a spider tripod.
Is it not happening now? |
Eurydia Vespasian
Storm Hunters
4444
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Posted - 2013.11.29 00:29:00 -
[14] - Quote
guess that depends on what and how much of it is left. |
Eli Green
The Arrow Project
784
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Posted - 2013.11.29 01:10:00 -
[15] - Quote
Just as long as it doesn't hit Jupiter like Shoemaker. wumbo |
claire xxx
Bitter Vets and Friends
65
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Posted - 2013.11.29 02:38:00 -
[16] - Quote
Comet Ison isn't looking to healthy in this video.
http://imgur.com/kGjmfty
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Alpheias
Euphoria Released Triumvirate.
2978
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Posted - 2013.11.29 03:59:00 -
[17] - Quote
I don't think ISON will break up and here is why I don't think so.
First, ISON is big. I have read estimates of between 1 km and 500 meters, which isn't exactly small..
Second, it gets a bit of shielding from radiative heating by its coma. The coma is being pulled away by the solar wind, but it is still enough to slow the Sun's heating.
Third, while the Sun's corona is very hot (hotter than its surface) it is also very thin. It's really a vacuum, just a slightly thicker vacuum than the vacuum that is out by Earth's orbit.
Fourth, it's not going to be near the Sun for very long. It's currently moving at 115 km/s and will be moving even faster on the 28th. It is currently 23 million km from the Sun. It'll go past the Sun by 750,000 km on the 28th. By the 30th it'll be 25 million km away from the Sun (heading roughly towards us and north out of the ecliptic). In 4 days it will manage to cover almost 50 million km, which is roughly 1/3 of the distance from the Earth to the Sun.
What might happen is either ISON comes through in one piece (admittedly smaller than it was) or tidal forces from the Sun's gravity will cause it to break apart. If it does break up, it should have a larger tail than if it stayed in one piece. Comet Lovejoy (2011) for a quick comparison was only 500 meters in diameter. At perihelion it was 5 times closer to the Sun and was moving at 500+ km/s. It survived intact and gave everyone in the southern hemisphere a great show.
/crawls back to bed.. I hate being sick and not able to sleep. I hope I answered some questions. Allow me to be frank. You will not like me. You will not like me now, and you will not like men++ a good deal less as we go on. |
claire xxx
Bitter Vets and Friends
65
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Posted - 2013.11.29 04:20:00 -
[18] - Quote
Alpheias wrote:I don't think ISON will break up and here is why I don't think so. First, ISON is big. I have read estimates of between 1 km and 500 meters, which isn't exactly small.. Second, it gets a bit of shielding from radiative heating by its coma. The coma is being pulled away by the solar wind, but it is still enough to slow the Sun's heating. Third, while the Sun's corona is very hot (hotter than its surface) it is also very thin. It's really a vacuum, just a slightly thicker vacuum than the vacuum that is out by Earth's orbit. Fourth, it's not going to be near the Sun for very long. It's currently moving at 115 km/s and will be moving even faster on the 28th. It is currently 23 million km from the Sun. It'll go past the Sun by 750,000 km on the 28th. By the 30th it'll be 25 million km away from the Sun (heading roughly towards us and north out of the ecliptic). In 4 days it will manage to cover almost 50 million km, which is roughly 1/3 of the distance from the Earth to the Sun. What might happen is either ISON comes through in one piece (admittedly smaller than it was) or tidal forces from the Sun's gravity will cause it to break apart. If it does break up, it should have a larger tail than if it stayed in one piece. Comet Lovejoy (2011) for a quick comparison was only 500 meters in diameter. At perihelion it was 5 times closer to the Sun and was moving at 500+ km/s. It survived intact and gave everyone in the southern hemisphere a great show. /crawls back to bed.. I hate being sick and not able to sleep. I hope I answered some questions.
Not to say you're wrong, but there is this article here: http://www.usatoday.com/story/news/nation/2013/11/28/comet-ison-nasa/3776419/
Relevant quote from article: 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.
And this article: http://abcnews.go.com/Technology/comet-ison-disintegrate-passes-sun-today/story?id=21041610
Relevant quote: Karl Battams , a comet scientist for the Naval Research Laboratory, tweeted out this afternoon: "We see zero sign of a nucleus, which is not good."
During the end of a live NASA host Google+ Hangout to answer questions about ISON, solar physicist Alex Young said: "It's unfortunate that it doesn't appear that we'll see it."
"For whatever reason, we don't know right now, we may never know the reason why it just was not stable enough or perhaps the gravity from the sun (was the cause)," Young said. "The gravity is so strong that each ends experience is different than the other end and that just tears and rips and pulls at the comet and in this case, perhaps it just experienced so much stress that it broke apart and once it broke into its little pieces then they all melted much quicker and perhaps we lost it."
Even with the disintegration it still offered a glimpse into how comets interact with the sun's magnetic fields.
It's not looking good for ISON at all. |
Mudkest
Adventurers
116
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Posted - 2013.11.29 10:26:00 -
[19] - Quote
http://xkcd.com/1297/ sad little comet :( |
Kitty Bear
Disturbed Friends Of Diazepam Disturbed Acquaintance
999
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Posted - 2013.11.29 10:42:00 -
[20] - Quote
ISON decided it couldn't after all
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Mizhir
Euphoria Released Triumvirate.
46567
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Posted - 2013.11.29 11:44:00 -
[21] - Quote
Damn that sucks. One Man Crew - The official Bringing Solo Back contest
SCL5 Winner |
Alpheias
Euphoria Released Triumvirate.
2979
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Posted - 2013.11.29 13:39:00 -
[22] - Quote
claire xxx wrote:
It's not looking good for ISON at all.
No. It does not look good for ISON at all, however it is still too early to tell because for every comment that says that ISON broke in the Sun's corona, there are also comments that said it survived. Allow me to be frank. You will not like me. You will not like me now, and you will not like men++ a good deal less as we go on. |
Krixtal Icefluxor
INLAND EMPIRE Galactic
78727
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Posted - 2013.11.29 13:41:00 -
[23] - Quote
Alpheias wrote:claire xxx wrote:
It's not looking good for ISON at all.
No. It does not look good for ISON at all, however it is still too early to tell because for every comment that says that ISON broke in the Sun's corona, there are also comments that said it survived.
Sounds like the exact dynamics of a religious argument instead of science "He has mounted his hind-legs, and blown crass vapidities through the bowel of his neck."-á - Ambrose Bierce on Oscar Wilde's Lecture in San Francisco 1882 |
claire xxx
Bitter Vets and Friends
65
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Posted - 2013.11.29 14:37:00 -
[24] - Quote
Alpheias wrote:claire xxx wrote:
It's not looking good for ISON at all.
No. It does not look good for ISON at all, however it is still too early to tell because for every comment that says that ISON broke in the Sun's corona, there are also comments that said it survived.
Woke up to this on CNN: http://www.cnn.com/2013/11/29/us/ison-comet/
(CNN) -- Hold the obituary. Experts now think Comet ISON -- or at least part of it -- survived its close encounter with the sun. Karl Battams, a comet scientist for the Naval Research Laboratory, said it is believed some parts of ISON's nucleus survived perihelion. "It now looks like some chunk of ISON's nucleus has indeed made it through the solar corona, and re-emerged," he said. "It's throwing off dust and (probably) gas, but we don't know how long it can sustain that."
So I'm ever hopeful.
And Krixtal Icefluxor, you comment Re, religion -v- science made me LOL |
claire xxx
Bitter Vets and Friends
65
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Posted - 2013.11.29 14:42:00 -
[25] - Quote
Also, from the same CNN article I linked above were these amusing tidbits:
The discovery stunned many in the comet-watching community and led some to nickname ISON the zombie comet.
Others repeated an old joke about comets and cats. "Comets are like cats; they have tails, and they do precisely what they want," David H. Levy said. |
Eurydia Vespasian
Storm Hunters
4445
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Posted - 2013.11.29 18:58:00 -
[26] - Quote
Yay! I hope it's enough to see. I had a feeling the show wasn't quite over when I went to bed last night. There was still some speculation and the imagery seemed promising at least something of it made it around. |
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