Zeuzzz
Banned
- Joined
- Dec 26, 2007
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how would you like your crow, RC, Tusenfem, Dancing David, Zeuss?
Medium rare please
how would you like your crow, RC, Tusenfem, Dancing David, Zeuss?
Medium rare pleaseThough pheasant would be nicer.
how would you like your crow, RC, Tusenfem, Dancing David, Zeuss?
ETA RC
What's your take RC? comet or asteroid?
snip
Oh ohhh!!!let's spout the usual nonsense, in the same context as comets "water ice" replenishment, as follows
But wait there's more the electric universe says this is the most likely option, same as the moon, mercury, comets and now asteroids!
Booya!!!
There may be no need for NASA's "hidden" ices, they are made right out of the solar wind!
RC said
Oh and check out it's density!
how would you like your crow, RC, Tusenfem, Dancing David, Zeuss?
How about citing your source?
And then you are mixing quotes like this one:One possibility is that ice lies buried several meters below the surface of the roughly 160-kilometer-wide asteroid and makes its way to the top when the asteroid is pummeled by space debris. Norbert Schörghofer of the University of Hawaii at Manoa proposed last year that ice can persist for billions of years just below the surface of a dusty space rock if the asteroid’s surface temperature is less than about 145 kelvins. The temperature of 24 Themis lies in that range.
Another option is that an action similar to the recent findings of water on the Moon, where solar wind interacts with a rocky body without an atmosphere to create H2O and OH molecules. Without an atmosphere, the body is exposed to solar wind, which includes hydrogen ions. The hydrogen is able to interact with oxygen in surface of the asteroid to create water molecules.
Ice confirmed on an asteroid.What's your take RC? comet or asteroid?
Ice confirmed on an asteroid.
It is an asteroid. Someone cannot read which is not a surprise since we now know that they cannot tell that 3 is greater thanb 0.6.
Are you so ignorant that you do not know that comets have tails?
how would you like your crow, Sol88![]()
At the asteroid’s average distance from the sun — 3.2 times Earth’s distance to the sun — frozen water on the surface would readily vaporize, noted Campins. That means the ice must be continually replenished, possibly by a reservoir of frozen water within the rock, he speculates.
The presence of frozen water on 24 Themis also suggests that some asteroids resemble comets, becoming active suddenly and venting material into space when pockets of ice vaporize, Campins noted.
The probable reason that 24 Themis does not have a tail is because it does not have enough ice to have a tail. The detection is of ice on the surface - I did not see any mention of amounts.Tell me RC, where is 24 Themis's tail, coma et cetera? 'Cos you know it should be sublimating at taht distance! as stated
Real universe: There are at least 173,583 asteroids (rocky bodies) that have an orbit with an eccentricity above a minimum value that are not comets. This includes asteroids that have been observed for decades.
There are 459,893 asteroids with eccentricities greater than the minimum observed eccentricity of comets (0.0279).
EC predicts that 100,000's of asteroids should be comets
Only to youAll seems very confusing eh?
.The probable reason that 24 Themis does not have a tail is because it does not have enough ice to have a tail. The detection is of ice on the surface - I did not see any mention of amounts.
But since you are an expert on cometsrolleyes:
) you should be able to tell us exactly how much ice was found on 24 Themis and a calculated size of it's coma and tail.
But a better question and actually relevant to this thread:
Tell me Sol88, Where is its tail?
According to EC it must have one - it is an rocky body after all!
The minimum eccentricity observed from comets is 0.0279.
The eccentricity is 24 Themis is 0.13.
Thus according to EC is has to be a comet (even if no water was detected on it).
In case you have forgotten to read yet again:
Only to you.
LINK likely has additional source regions below the surface why would that be the most likely source??? because the dirtysnowball model would land flat on it's arse if "hidden" ice majik spell was not invoked!!!The total area of exposed water ice is significantly less than that required to support the observed ambient outgassing from the comet, which likely has additional source regions below the surface.
I do not know. How much ice to form a tail Sol88?How much ice to form a tail RC? How much ice was found on the surface of 9p/Temple 1? that had a tail!
No I do not mean that.you therefore mean 24 Themis has less surface ice than Temple 1 and thats the reason there is no tail and coma?
There was not even enough "surface ice" to form temple 1's tail and coma
LINK likely has additional source regions below the surface why would that be the most likely source??? because the dirtysnowball model would land flat on it's arse if "hidden" ice majik spell was not invoked!!!
try again sport!
How hidden is that water RC?
try again sport!We report the direct detection of solid water ice deposits exposed on the surface of comet 9P/Tempel 1, as observed by the Deep Impact mission. Three anomalously colored areas are shown to include water ice based on their near-infrared spectra, which include diagnostic water ice absorptions at 1.5 and 2.0 micrometers. These absorptions are well modeled as a mixture of nearby non-ice regions and 3 to 6% 10- to 50-micrometer-size water ice particles. These particle sizes are larger than those ejected during the impact experiment, suggesting that the surface deposits are loose aggregates. The total area of exposed water ice is significantly less than that required to support the observed ambient outgassing from the comet, which likely has additional source regions below the surface.
!Lets have a look at another interesting asteriod: Eros
We know a lot about this asteroid because we have actually landed a spacecraft on it!
An eccentricity of 0.223 is more then the main-belt comets and lots more then the minimum eccentricity of comets. According to EC it should be a comet. It is not. Yet another of the 100,000's of nails in EC's coffin.
LINKIn 2006, scientists reported that at least three bodies in the outer part of the main belt demonstrate classical cometary behavior, and defined a new class of bodies called the main belt comets. This followed the 2005 discovery that the largest main belt asteroid, Ceres, must contain a lot of water ice. All of these formed in the same places as the asteroids but have retained liquid water over the age of the solar system. Many main belt asteroids may in fact contain a lot of ice, especially in the outer part of the belt; the line separating asteroids and comets is growing increasingly fuzzy.
try again sport!
Because the EC idea is so dumb that only the truly gullible (or impaired - see below) could believe it.
Since your Alzheimer's seems to be acting up yet again :
Deep Impact showed that the % of water in Comet Tempel 1 was between 20% and 50%.
I hope that you can tell the difference between 0.1% and 20% !
Quote:
The total area of exposed water ice is significantly less than that required to support the observed ambient outgassing from the comet, which likely has additional source regions below the surface.
As your Alzheimer's really seems to be acting upTell me since my Alzheimer's seems to be acting up yet again, where did they find the 20% - 50% of water in comet Temple 1? On the surface? just under the surface? Really really deep under the surface?
Come on RC your smartrolleyes
where was the bulk of the OH measured?
My Alzheimers is that bad I can only remember vanishingly small % surface ice was found on Temple 1 as stated in a post not long back
So what can we ad hoc together so we don't look like fools? I know lets "hide" the water deep under the surface!!! brilliant science that![]()
.This suggests to me that the observed patches of surface ice are there only because of their correlation with jets. They are debris from the jets.The temperature was up to 329 Kelvin (56 Celsius, 133 Fahrenheit) on the sunlit side, and was as cold as 260 Kelvin (–13 Celsius, 9 Fahrenheit) on the nighttime side. So, everywhere that Deep Impact could see, the comet was hotter than the temperature at which ices of water, carbon dioxide, and carbon monoxide would sublimate. In other words, any ice present at Tempel 1's surface would quickly turn into a gas. It's only at some depth below the surface that temperatures stay cold enough all the time that the Sun can't heat the comet enough to evaporate the ice.
(emphasis added)The crater produced by the impact of the Deep Impact projectile on Comet 9P/Tempel 1 was not visible from the spacecraft due to ejection of optically thick dust. However, the crater size can be estimated from the total mass of the ejecta cloud of 107 - 108 kg as seen by remote observers. Assuming that all of the mass in the crater left the comet, the corresponding cratering efficiency (mass of the material in the crater divided by impactor mass) is 2.5 x 104 - 2.5 x 105, or 1 - 2 orders of magnitude higher than expected for the impact velocity of Deep Impact (10.2 km/s) from impact experiments into porous ice/dust mixtures (e.g. Koschny and Grün, Icarus 154, 391, 2001; Holsapple, Icarus 191, 586, 2007). Only impacts into materials of extremely low strength (< 100 Pa) and of low porousity can create such large crater ejecta masses. Since comets are expected to be more porous and of somewhat higher strength (at the spatial scale of the impact), we investigate alternative possibilities to explain the large amount of observed dust and gas. All the material was created in less than an hour after the impact; therefore the sublimation from the freshly created surface (impact crater) is negligible for the total mass. However, due to the low thermal inertia of the cometary surface layer, the impact suddenly exposed extremely cold material to the surface of the nucleus. We will discuss possible mechanisms of prompting a small cometary outburst immediately after the impact, caused by solar heating of that freshly exposed material.
(emphasis added)Only impacts into materials of extremely low strength (< 100 Pa) and of low porousity can create such large crater ejecta masses. Since comets are expected to be more porous and of somewhat higher strength (at the spatial scale of the impact), we investigate alternative possibilities to explain the large amount of observed dust and gas.
RC wrote:
This does not sound like a rocky body to me.
