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

[Mexicodoug]

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 
 
______________________________________________ 
http://www.meteoritecentral.com 
Meteorite-list mailing list 
Meteorite-list at meteoritecentral.com 
http://six.pairlist.net/mailman/listinfo/meteorite-list