[meteorite-list] Extra solar impactors and comets

[Gerald Flaherty]

much appreciated Kevin!
----- Original Message ----- 
From: "Kevin Forbes" <vk3ukf at hotmail.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Saturday, June 03, 2006 10:05 PM
Subject: [meteorite-list] Extra solar impactors and comets



>

>

> Greetings all,

>

> a thought to pervade your mind and something else to contemplate apart 

> from your navel.

>

> The oort cloud, the very outer extremeties of our solar system, millions 

> of bodies, probably mainly ices mixed with silicates. Cometary bodies and 

> planetary orbs lost to the depths of space. But, they are there. Other 

> star systems probably have a similar 'oort' thing around them, slowy 

> following the gravitational attraction of the central star in that system 

> as it drifts through the galaxy. Over time, a passing of stars occurs, not 

> an entirely close call, but one that would allow material and bodies of 

> one system to migrate or be stolen by the other system. A dramatic change 

> in course for the migrating body, some may just change from their origanl 

> formation parent to their new foster star and stay in the darkness, some 

> may have a different set of motions inflicted upon them, sending them on a 

> course that sweeps through the inner system of rocky planets. Look out.

>

> How many orphans are there in space, not gravitationally attached to any 

> star, having either been ejected through orbital conflicts in a system 

> with a larger more massive body, or formed ( I shall call this, 'A Dark 

> System' ) a dark system, a coagulation of material from a cloud of dust 

> and icy particles  that certainly forms lumps, but comes nowhere near that 

> of forming a solar system. How many 'Dark Systems' are there, and how 

> often do they collide with star systems and loose material or meld with.

>

> And now, I must make a comment regards a statement by a scientist that 

> made, in my opinion, an awakening utterance. At first I thought, 

> 'outrageous', 'how silly'. Silicate dusts were found in cometary debris, 

> he therefore postulated that comets must have formed near the sun. 

> ????????????

>

> In my mind, I see bodies of the inner solar system being the source of the 

> silicate dusts, their constant impacts creating a constant supply of fine 

> dusts that would be blown by solar wind to the extremeties of the outer 

> solar system, where they would fall upon any icy cometary bodies that they 

> happened to chance upon. It must be obvious to that icy bodies such as 

> comets would NOT form near the sun, due to the temperature being high. Any 

> comets hanging around near the inner solar system, Jupiter and inwards 

> would quickly evaporate. Comets must be born in the cold outer reaches of 

> our or other systems. Some comets in our system at this moment may have 

> been stolen from passing systems as the two interacted for a period during 

> their passing of each other. The fact that there are silicate dusts mixed 

> up in the ices, would suggest that they have been collecting 'fairy dust' 

> for a period of time. What could have happened??? Perhaps before the sun 

> burst into life, in the pre-solar nebula, the bulk of the comets did in 

> fact reside in the inner solar system. When the larger bodies began to 

> accumulate they were ejected en-masse to the outer reaches where they are 

> now existing as a record of what happened, waiting for us to go there, and 

> study. Can isotopic ratios give us a clue as to there original place of 

> formation in the solar nebula?

>

> Is our understanding of such things as isotopic data and distribution 

> satisfactory to enable this?

>

> I have been absent from the list for a while, I may have missed something 

> that I should not have.

>

> If you are thinking that I need a thick ear, then please, bash away.

>

> Yours faithfully, Kevin Forbes, VK3UKF.

>

>

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