[meteorite-list] A question????? -an answer!!!

Jason Utas meteoritekid at gmail.com
Fri Jun 5 02:11:31 EDT 2009


Of course, if anyone here is familiar with Tintin (in particular,
"Tintin and The Shooting Star"), one knows that the elements in at
least some meteorites can create such beasts...

http://farm1.static.flickr.com/3/4224425_e9c3ce4f4e.jpg

On Thu, Jun 4, 2009 at 10:52 PM, Mexicodoug<mexicodoug at aim.com> wrote:
> Pete wrote:
>
> "can a meteorite hit earth and eject debris which (maybe) land on the
> moon or Mars? What would we call such a meteorite---Earthoid, or maybe
> Earthite?"
>
> Hi Pete,
>
> Generally the splashed and splattered material from a meteoroid impact on
> earth are called "Tektites", or if it was from the biggest impact they are
> called the "Moon". Tektites are thought to be formed from the largest
> collisions and are so far from escaping the gravitational domination of the
> earth, that, if Earth were a grapefruit size, most of the tektites the list
> is familiar with have the escape velocity of an acrobatic ant jumping at
> most a few millimeters high.
>
> Technically, the Moon is the only known Earthoid.
>
> Most of us are skeptical about a reverse path plausibility to not only
> survive the initially viscous path out of the atmosphere, but then also
> beyond the reach of Earth's primary gravitational dominance. once you look
> at the seemingly impossible physics (few things in nature are outright
> impossible, but even Clinton would have a harder time arguing most of them
> than against, say, good DNA testing results).
>
> The Moon is a good clue to the answer to your question. It has 27% of the
> Earth's diameter (though under 2% of the mass). That was a big impact,
> supposedly from a Mars sized planetoid! Yet, all the material is assumed to
> have stayed on Earth or within its grasp (forming the Moon).
>
> Wh
> at I'm getting at is the answer to your question is no one knows, and it is
> well covered in the archives since this question comes up at least once a
> year. That is why tried to give a different slant on the answer this time so
> the old timers aren't bored out of their mind.
>
> Let me leave you with this fine research question:
> So, how much material, if any, could have been ejected from the collision
> that created the Earth-Moon system as a result? That would be an olympic
> jumping spider!
>
> Best wishes,
> Doug
>
>
>
> -----Original Message-----
> From: Pete Shugar at clearwire.net <pshugar at clearwire.net>
> To: meteorite-list at meteoritecentral.com
> Sent: Thu, 4 Jun 2009 11:02 pm
> Subject: [meteorite-list] A question?????
>
>
> We have the Martian type meteorite, and we have the
> Lunar meteorite and last, the asteroid 4Vesta meteorite.
> These we know where they come from.
>
> Now the question---given enough energy, can a meteorite
> hit earth and eject debris which (maybe) land on the moon
> or Mars? What would we call such a meteorite---Earthoid,
> or maybe Earthite?
> Just contemplating my navel here.
> Pete
>
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