[meteorite-list] Extra solar impactors and comets

From: Gerald Flaherty <grf2_at_meteoritecentral.com>
Date: Sun Jun 4 21:07:25 2006
Message-ID: <006301c68839$064d23f0$6402a8c0_at_Dell>

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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Received on Sun 04 Jun 2006 08:43:12 PM PDT