Skip to comments.
Hubble Looks but Finds No Trace of Comet ISON
universetoday.com ^
| December 20, 2013
| Bob King on
Posted on 12/20/2013 10:16:14 PM PST by BenLurkin
On December 18, the Hubble Space Telescope slewed to Comet ISONs expected position and found nothing down to the incredibly faint magnitude of 25. According to astronomer Hal Weaver, who planned the ISON search, that limit implies any remaining fragments would have to be smaller than about 500 feet (160 meters) in diameter.
(Excerpt) Read more at universetoday.com ...
TOPICS: Astronomy; Science
KEYWORDS: comet; cometison; finds; hubble; ison; looks; trace
Navigation: use the links below to view more comments.
first 1-20, 21-40, 41-60, 61-70 next last
1
posted on
12/20/2013 10:16:14 PM PST
by
BenLurkin
To: BenLurkin; SunkenCiv
2
posted on
12/20/2013 10:21:01 PM PST
by
GeronL
(Extra Large Cheesy Over-Stuffed Hobbit)
To: Yosemitest
Sad day for BPEarthwatch...
On December 18, the Hubble Space Telescope slewed to Comet ISONs expected position and found nothing down to the incredibly faint magnitude of 25.
3
posted on
12/20/2013 10:50:18 PM PST
by
NoCmpromiz
(John 14:6 is a non-pluralistic comment.)
To: BenLurkin
Sorry, teach, the sun ate my comet.
4
posted on
12/21/2013 12:26:12 AM PST
by
NonValueAdded
(It's not the penalty, it's the lack of coverage on 1 Jan. Think about it.)
To: GeronL
5
posted on
12/21/2013 1:20:47 AM PST
by
Bullish
(America should yank Obama like a rotten tooth before he poisons the entire body)
To: NonValueAdded
The far side of the sun can be a mother!
6
posted on
12/21/2013 1:22:03 AM PST
by
Bullish
(America should yank Obama like a rotten tooth before he poisons the entire body)
To: BenLurkin
It pulled a Han Solo...
7
posted on
12/21/2013 1:48:44 AM PST
by
BCW
(Salva reipublicae)
To: BCW
8
posted on
12/21/2013 1:49:33 AM PST
by
BCW
(Salva reipublicae)
To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
Thanks GeronL, additional to APoD.
9
posted on
12/21/2013 2:12:58 AM PST
by
SunkenCiv
(http://www.freerepublic.com/~mestamachine/)
To: BenLurkin
So it's not in its
expected position?
That's unexpected!
10
posted on
12/21/2013 2:23:54 AM PST
by
FroggyTheGremlim
("It is not the color of his skin, ... it is the blackness that fills his soul")
To: NoCmpromiz
From YOUR SOURCE:
"After ISON was torn asunder by the sun, there existed the possibility that comets remains would follow a slightly DIFFERENT ORBIT.
No debris
LARGER THAN 500 FEET IN DIAMETER. 500 Feet, or 160 meters for you that prefer the metric system over the common man's American System, is pretty big.
And that IS ONLY
"IF" they knew
"WHERE TO LOOK".
That's a pretty big "IF" .
11
posted on
12/21/2013 5:47:54 AM PST
by
Yosemitest
(It's Simple ! Fight, ... or Die !)
To: Yosemitest
comets remains would follow a slightly DIFFERENT ORBIT.Note the word slightly. Not significantly.
12
posted on
12/21/2013 5:50:00 AM PST
by
dirtboy
To: Yosemitest
That video is pretty chock full of ‘ifs’ as well. Basically, IF the laws of physics have changed, then we might be in danger.
13
posted on
12/21/2013 5:55:41 AM PST
by
dirtboy
To: NoCmpromiz
December 26, 2013 is the day Ison was suppose to be closest to Earth on its outbound path.
So that day is the day that my concern level will start to lessen.
14
posted on
12/21/2013 5:57:05 AM PST
by
Yosemitest
(It's Simple ! Fight, ... or Die !)
To: dirtboy
15
posted on
12/21/2013 5:57:51 AM PST
by
Yosemitest
(It's Simple ! Fight, ... or Die !)
To: Yosemitest
You need to stop looking at the orbital paths in a two-dimensional manner. Ison’s orbit is well outside the ecliptic. Earth’s orbit will not intersect that path as a result. There is a perfectly normal explanation for ISON’s disappearance, but that never stopped the internet conspiracy mongers from making up absurd explanations and peddling them to the gullible.
16
posted on
12/21/2013 6:08:08 AM PST
by
dirtboy
To: Darksheare
17
posted on
12/21/2013 6:40:05 AM PST
by
Colonel_Flagg
(Some people meet their heroes. I raised mine. Go Army.)
To: Colonel_Flagg
18
posted on
12/21/2013 7:32:08 AM PST
by
Darksheare
(Try my coffee, first one's free..... Even robots will kill for it!)
To: Yosemitest
19
posted on
12/21/2013 7:36:48 AM PST
by
Darksheare
(Try my coffee, first one's free..... Even robots will kill for it!)
To: dirtboy
I understand three dimensions.
What you need to understand is: We don't know WHERE Ison's debris IS.
We don't know HOW Ison disintegrated. Was it a crumbling,
or was it an explosive disintegration cause from highly pressurized gases (heated to a high pressurization by the Sun's heat and radiation) inside the nucleus of Ison?
We don't know WHERE Ison disintegrated? Did it happen BEFORE Ison started its "Sling-shot" around the Sun,an thus, requiring a smaller change in its path to cause a danger to Earth?
Did it happen during the "Sling-shot" around the Sun?
Did it happen after the "Sling-shot" around the Sun?
IS the "V" pattern observed in its departure from the Sun just a "V" or is it a "Cone" shape shrapnel pattern that continues to widen as it travels through space?
I have no confidence that Earth is out of the danger from Ison's debris trail, just because Hubble didn't observe anything.
I have a very good friend that worked at Kwajalein Space Communications And Control Facility, who maintained their radar and long distance communications equipment.
He left there in the mid to late 80s, and he told me that the equipment of his day could not get a return on an object 500 feet in diameter
(depending upon its makeup, whether metal, an asteroid, or comet debris) until it was within 50,000 miles of Earth.
Now I know that technology has only gotten better since the 80s,
but at Ison's debris' speed, that's only about one hour or two hours at best, early notification that we're in danger of a "near miss" or an impact.
That's not enough notification to really do anything about it
unless we have people standing and waiting at the ready to react to an immediate notification.
But you're so confident that we're not in danger.
You obviously never fired a shot-gun blast of pellets, have you?
20
posted on
12/21/2013 8:17:35 AM PST
by
Yosemitest
(It's Simple ! Fight, ... or Die !)
Navigation: use the links below to view more comments.
first 1-20, 21-40, 41-60, 61-70 next last
Disclaimer:
Opinions posted on Free Republic are those of the individual
posters and do not necessarily represent the opinion of Free Republic or its
management. All materials posted herein are protected by copyright law and the
exemption for fair use of copyrighted works.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson