[meteorite-list] Related Meteorite Falls 11 years apart? BothHammers! Both L6 Olivine-hypersthene

From: cdtucson at cox.net <*cdtucson_at_meteoritecentral.com*> Date: Mon, 8 Mar 2010 12:21:38 -0500 Message-ID: <20100308122138.RGN9K.807124.imail_at_fed1rmwml44> · cdtucson_at_meteoritecentral.com

--
Carl or Debbie Esparza
Meteoritemax
---- Martin Altmann <altmann at meteorite-martin.de> wrote: 
> Hi Eric,
> 
> I can't find anything rude in my post, neither I intended to mock you.
> I used the raindrop analogy for three reasons.
> 
> Your idea was, that two meteorites hit ground in almost the same place in a
> period of 11 years and they are of the same petrologic type.
> These coincidences seem so strong, that one tends to say, that those were no
> independent events. It's about unlikelinesses.
> 
> So. If someone tells you. I'll climb to an altitude of some 1000 feet with a
> pipette. And there I let fall two single drops. And the drops will splash on
> exactly the same spot on the ground - then one would tend to say: That's
> impossible!
> 
> Secondly I chose the raindrop analogy, because it takes place in the
> atmosphere.
> 
> If your idea would be right, then Earth and the second meteorite have to
> meet geometrically exactly in the same place in space (and space is somewhat
> large and Earth and meteorid really small) like with the first meteorite, a
> question of fractions of seconds, as we talk about speeds of many miles per
> second, and also little Weatherfield or the point of the entry in the
> atmosphere has to be seen the rotation of the Earth around its axes, just in
> the same place.
> Well and there I say, we don't need to think even about orbits of Earth,
> debris streams, resonances ect.
> Why?
> Because alone the factors which influence the atmospheric passage of these
> both meteorids cause such a scatter, that even if both meteorids entered
> atmosphere at the very same point, in the very right moment, with the same
> angle and speed, that they will not fall down so closely to each other.
> 
> Because the bodies have different flight dynamics, depending on their mass
> and shape. Air pressures and wind is a factor. The height of a break up, the
> point of retardation, when it's slowed down and the free fall starts.
> These are all factors already sufficient, to make it highly unlikely that
> these two falls belong together.
> 
> Maybe also for a third reason I used the raindrops, this time in an opposite
> way.
> The raindrop hits the other only because there are so many drops falling.
> I think, or at least I haven't the imagination of an asteroid family or
> Earth-crosser stream being dense. And I think one can't compare such a
> stream with e.g. the cometary dust streams, which causes the periodical
> meteor streams, when Earth crosses them on its annual path around the Earth.
> ...and even those aren't fairly dense, if you remember, that the best annual
> meteor streams generate only a few dozens of shooting stars per hour for the
> observer at their maxima.
> Also the asteroid belt is btw. quite empty - at least emptier as it is
> usually shown in the animations on TV, where large lumps are floating
> through space like a flock of sheep.
> If you imagine, that on such a huge volume of space, the asteroid belt
> comprises, a total mass of only 5% of our Moon - (and that half of that mass
> is contained already in the four largest objects of the asteroid belt.
> Ceres, Vesta, Pallas, Hygiea) - then I'd say, that even the asteroid belt is
> quite a void space.  
> 
> 
> Well, and as Captain Blood said - it isn't uncommon, that in a relatively
> small place different meteorites are found. - all these "Name" + (a), (b),
> (c), (d)... designations in the Bulletin.
> Or think about the places, where Sonny and the Count are hunting meteorites
> to cause hefty depressions among the other meteorite collectors :-)
> 
> Or take the DaG-Meteorites and Oman, because they have coordinates.
> In what for small areas thousands of different original falls were found.
> Those deserts record a longer fall history; up to 50,000 years is the range
> of the terrestrial ages there - still a very short period of time, if you
> remember, that such a meteorite from the day it had been whacked off from
> his parent body, usually floats several million years around the sun, until
> it will be caught by Earth.
> 
> Anyway, there are also other coincidences than geographical ones.
> 
> Thuathe and Kilabo felt both o 21th of July 2002. (One is H4/5 the other an
> LL6).
> 
> And Pribram and Neuschwanstein shared the same orbit.
> But one is a H5, the other a EL6.
> 
> Best!
> Martin
>   
> 
> -----Urspr?ngliche Nachricht-----
> Von: meteorite-list-bounces at meteoritecentral.com
> [mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von
> Meteorites USA
> Gesendet: Montag, 8. M?rz 2010 03:04
> An: meteorite-list at meteoritecentral.com
> Betreff: Re: [meteorite-list] Related Meteorite Falls 11 years apart?
> BothHammers! Both L6 Olivine-hypersthene
> 
> I was going to stay closed mouth since I opened it a few hours ago and 
> got my theory handed back to me very matter-of-factly. However, a rain 
> drop is hardly a meteorite and does not orbit the Sun, unless of course 
> it somehow miraculously escapes the Earth's gravitational field. But 
> then it would freeze in deep space and would no longer be considered 
> rain now would it? I believe frozen water is called ice if I'm correct. 
> but then again wouldn't it melt once it got closer to the sun? I could 
> be wrong here so please point out if I am... I'm sure you will.
> 
> All the BS aside, I would venture a guess that if someone found two 
> meteorites of the same class 1.4 miles away from one another as cold 
> finds they would assume the area would be a strewnfield until proven 
> otherwise. This without of course taking into account any dating of the 
> stones.
> 
> Didn't I read a while back about asteroid-quakes? As asteroids near the 
> Earth newer material is brought to the surface. In other words, would an 
> asteroid's surface act as a shield against the cosmic rays to the 
> interior of the asteroid? Would this affect anything at all? Is ALL 
> material in any given asteroid the same age, or is this age determined 
> by the cosmic radiation levels within any given part? Does this take 
> into account other older and younger bodies impacting a parent body and 
> becoming part of that body? Is accretion real or a figment of scientific 
> world's imagination? Am I asking too many questions? ;)
> 
> I'm being facetious of course. Now, I'm assuming a lot of things here, 
> and call me an ass if you like, but at least I didn't sound like an ass 
> by slamming someone else on-list and insulting them by explaining what 
> rain is.
> 
> As far as I know a meteorite is made of stone or iron, or a mixture of 
> both and it comes from an asteroid, and these asteroids come from space 
> and all have orbits unless those orbits are perturbed by a larger body, 
> like which I have been apparently.
> 
> Regards,
> Eric
> 
> 
> 
> 
> 
> 
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